GENESIS HEALTHCARE PARTNERS PC
GASTROENTEROLOGY · TORRANCE, CA · 211 providers · hospital-affiliated · (310) 534-8400
Provider volumes, all codes · CY2024
Group overview · all codes · CY2024
All figures are attributed (single-group clinicians only) and disclosed (CMS suppresses fewer-than-11-beneficiary rows) Medicare Part B fee-for-service — a subset, never complete totals. Percentile and peer figures are billed-volume positions, not statements about care. See Methods & Sources.
| NPI | Provider | Credentials | Type | City | St | Services (all codes) |
|---|---|---|---|---|---|---|
| 1013097534 | Sender, Mark | M.D., IN | Urology | Santa Clarita | CA | premium |
| 1164666228 | Morrisroe, Shelby | M.D. | Urology | Torrance | CA | premium |
| 1811170400 | Kamal, Mohammad | M.D. | Pathology | Pasadena | CA | premium |
| 1740201623 | Matsunaga, Garrett | M.D. | Urology | Torrance | CA | premium |
| 1588632715 | Dato, Paul | M.D. | Urology | La Mesa | CA | premium |
| 1053436550 | Lesser, Timothy | MD | Urology | Torrance | CA | premium |
| 1245446228 | Mahooti, Sepi | M.D. | Pathology | San Diego | CA | premium |
| 1669637013 | Patel, Mayank | M.D. | Urology | Tarzana | CA | premium |
| 1073567434 | Dardashti, Kambiz | MD | Urology | Torrance | CA | premium |
| 1689815458 | Flechner, Lawrence | M.D., PH.D. | Urology | Torrance | CA | premium |
| 1740236066 | Koo, Alec | M.D. | Urology | Torrance | CA | premium |
| 1205852985 | Pruthi, Jatinder | M.D. | Gastroenterology | Lancaster | CA | premium |
| 1295122497 | Guan, Jay | M.D. | Gastroenterology | Los Angeles | CA | premium |
| 1275544074 | Singh, Hardeep | M.D. | Gastroenterology | Orange | CA | premium |
| 1629010509 | Naitoh, John | MD | Urology | La Jolla | CA | premium |
| 1073598371 | Aynehchi, Shahrad | MD | Urology | Whittier | CA | premium |
| 1124174560 | Nowfar, Sepehr | M.D. | Urology | Whittier | CA | premium |
| 1073553681 | Rojany, Micha | MD | Gastroenterology | Sacramento | CA | premium |
| 1821280629 | George, Alister | M.D. | Gastroenterology | Thousand Oaks | CA | premium |
| 1982696613 | Madievsky, Michael | MD | Gastroenterology | Tarzana | CA | premium |
| 1548384167 | Simon, Karen | M.D. | Gastroenterology | Oxnard | CA | premium |
| 1023056850 | Miller, Donald | MD | Gastroenterology | Oxnard | CA | premium |
| 1336192301 | Park, Royal | M.D. | Urology | Torrance | CA | premium |
| 1699751586 | Gourdji, Maurice | M.D. | Gastroenterology | Tarzana | CA | premium |
| 1134274350 | Badii, Cyrus | M.D. | Gastroenterology | West Hills | CA | premium |
| 1750358735 | Lee, James | MD | Gastroenterology | Orange | CA | premium |
| 1275527657 | Goldklang, Robert | M.D. | Gastroenterology | Encinitas | CA | premium |
| 1952303414 | Mourani, Samuel | M.D. | Gastroenterology | Arcadia | CA | premium |
| 1154313880 | Hepps, Kenneth | MD | Gastroenterology | Tarzana | CA | premium |
| 1285632711 | Fuller, Donald | M.D. | Radiation Oncology | San Diego | CA | premium |
| 1659476323 | Garrett, Benedict | MD | Gastroenterology | Burbank | CA | premium |
| 1952386583 | Agatstein, Ernest | MD | Urology | Downey | CA | premium |
| 1346200730 | Buch, Kenneth | MD | Gastroenterology | Encino | CA | premium |
| 1427456151 | Vakilian, Siavosh | MD | Radiation Oncology | San Diego | CA | premium |
| 1174714067 | Marasigan, Justin | DO | Gastroenterology | Oxnard | CA | premium |
| 1740385418 | Kuritzkes, Richard | MD | Gastroenterology | Burbank | CA | premium |
| 1245349851 | Fisher, Henry | MD | Gastroenterology | Burbank | CA | premium |
| 1336175272 | Shirazi, Reza | M.D. | Radiation Oncology | San Diego | CA | premium |
| 1124085881 | Matthew, Jonathan | MD | Gastroenterology | West Hills | CA | premium |
| 1912010257 | Najarian, Haig | MD | Gastroenterology | Orange | CA | premium |
| 1083051577 | Banapour, Pooya | Urology | Whittier | CA | premium | |
| 1649244104 | Soltani, Sassan | M.D. | Gastroenterology | Pasadena | CA | premium |
| 1235124108 | Abousaif, Alaa | MD | Gastroenterology | Orange | CA | premium |
| 1467454835 | Tarakji, Elias | M.D. | Gastroenterology | Arcadia | CA | premium |
| 1013931930 | Juma, Saad | MD | Urology | Encinitas | CA | premium |
| 1578806089 | Alexanian, David | M.D. | Gastroenterology | Burbank | CA | premium |
| 1285723304 | Kasher, John | M.D. | Gastroenterology | Burbank | CA | premium |
| 1831277847 | Arimie, Calin | MD | Gastroenterology | West Hills | CA | premium |
| 1083686893 | Nickowitz, Richard | MD | Gastroenterology | Pasadena | CA | premium |
| 1104890664 | Rosenberg, Peter | M.D. | Gastroenterology | Pasadena | CA | premium |
| 1184665911 | Butler, Philip | M.D. | Urology | La Jolla | CA | premium |
| 1811967920 | Nguyen, Michelle | MD | Gastroenterology | Los Gatos | CA | premium |
| 1285909051 | Abedi, Garen | Urology | Downey | CA | premium | |
| 1629117643 | Dilauro, Steven | MD | Gastroenterology | Encinitas | CA | premium |
| 1225036742 | Ijaz, Tahir | M.D. | Radiation Oncology | San Diego | CA | premium |
| 1891794152 | Chin, Stefan | MD | Gastroenterology | Daly City | CA | premium |
| 1457886566 | Salvo, Rebecca | DO | Gastroenterology | Santa Barbara | CA | premium |
| 1912008657 | Chitayat, Ron | MD | Gastroenterology | West Hills | CA | premium |
| 1437757895 | Francis, Bethany | NP | Nurse Practitioner | Torrance | CA | premium |
| 1578563789 | Garcia Chuapoco, Rowena | MD | Gastroenterology | Daly City | CA | premium |
| 1225253651 | Lajoie, Adrianne | M.D. | Gastroenterology | Encinitas | CA | premium |
| 1437149226 | Zeroogian, John | M.D. | Gastroenterology | Pasadena | CA | premium |
| 1730316977 | Narsinh, Kiran | M.D. | Gastroenterology | San Pablo | CA | premium |
| 1376732057 | Yang, Julie | M.D. | Gastroenterology | Pasadena | CA | premium |
| 1164494811 | Edelman, Kalman | M.D. | Gastroenterology | Pasadena | CA | premium |
| 1063412195 | Tsuchiyose, Mark | M.D. | Gastroenterology | Daly City | CA | premium |
| 1093756827 | Cohen, Edward | M.D. | Urology | La Jolla | CA | premium |
| 1699066381 | Chen, Wei-Chung | MD | Gastroenterology | Los Angeles | CA | premium |
| 1952823528 | Enjamuri, Rukmini | MD | Gastroenterology | Oxnard | CA | premium |
| 1194055640 | Babakhanian, Zaree | M.D. | Gastroenterology | Glendale | CA | premium |
| 1205193828 | Nguyen, Ken | M.D. | Gastroenterology | Temple City | CA | premium |
| 1548606668 | Patel, Janki | M.D. | Gastroenterology | Encinitas | CA | premium |
| 1326135377 | Da Silveira, Eduardo | MD, MSC | Gastroenterology | San Jose | CA | premium |
| 1003260894 | Dwyer, Erin | N.P.-C | Nurse Practitioner | San Diego | CA | premium |
| 1851352009 | Dasari, Sriram | MD | Urology | Chula Vista | CA | premium |
| 1427419530 | Chiu, Daniel | Nurse Practitioner | Orange | CA | premium | |
| 1245345933 | Mogil, Adam | PA-C | Physician Assistant | Sherman Oaks | CA | premium |
| 1831516749 | Condon, Ashwinee | MD | Gastroenterology | Los Angeles | CA | premium |
| 1760645121 | Kao, James | MD | Gastroenterology | Murrieta | CA | premium |
| 1891770905 | Farrell, Frank | M.D. | Gastroenterology | San Francisco | CA | premium |
| 1225583735 | Catevenis, Rachel | PA-C | Physician Assistant | Santa Barbara | CA | premium |
| 1972548188 | Meth, Ernie | M.D. | Nuclear Medicine | Murrieta | CA | premium |
| 1841832847 | Fujita-Haffner, Chelsea | NP-C | Nurse Practitioner | Glendora | CA | premium |
| 1548439458 | Mukherjee, Matthew | M.D. | Gastroenterology | Pasadena | CA | premium |
| 1376856880 | Fennewald, Jessica | APRN | Nurse Practitioner | Camarillo | CA | premium |
| 1790789022 | Garcia, Ruel | M.D. | Gastroenterology | San Jose | CA | premium |
| 1710695143 | Chambers, Katrina | FNP | Nurse Practitioner | Encinitas | CA | premium |
| 1457088247 | Fathi, Maryam | Nurse Practitioner | West Hills | CA | premium | |
| 1396905576 | Bortniker, Ethan | M.D. | Gastroenterology | San Diego | CA | premium |
| 1881821825 | Gannavarapu, Bhargava | M.D. | Gastroenterology | San Jose | CA | premium |
| 1407084494 | Aditi, Anupam | M.D. | Internal Medicine | Daly City | CA | premium |
| 1326005091 | Herr, Stephen | MD | Gastroenterology | West Hills | CA | premium |
| 1053621565 | Neagos, Kristina | NP | Nurse Practitioner | Beverly Hills | CA | premium |
| 1538620760 | Moore, Sarah | Urology | Providence | RI | premium | |
| 1457021677 | Dukovic, Jasmina | PA-C | Physician Assistant | Downey | CA | premium |
| 1316333792 | Tomicich, Stephanie | NP | Nurse Practitioner | La Jolla | CA | premium |
| 1962045922 | Alaran, Yasmin | Physician Assistant | Downey | CA | premium | |
| 1104481324 | Sladewski, Katherine | PA | Physician Assistant | Torrance | CA | premium |
| 1720528532 | Zhu, Liang | Nurse Practitioner | Arcadia | CA | premium | |
| 1124100649 | Poirier, Gregory | PA | Physician Assistant | Stoneham | MA | premium |
| 1609402148 | Huang, Justine | PA-C | Physician Assistant | Long Beach | CA | premium |
| 1023470226 | Hua, Thuy | PA-C | Physician Assistant | Pasadena | CA | premium |
| 1124601422 | Ross, Matthew | NP | Nurse Practitioner | San Jose | CA | premium |
| 1275704744 | Cabansag, Cathleen | MD | Gastroenterology | San Francisco | CA | premium |
| 1093874703 | Everett, John | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Los Angeles | CA | premium |
| 1073843041 | Koettel, Christopher | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Monterey Park | CA | premium |
| 1639674450 | La Barba, Dean | MD | Internal Medicine | Burbank | CA | premium |
| 1093283905 | Alkhatib, Ousama | MD | Gastroenterology | Orange | CA | premium |
| 1770024093 | Lowe, Ashley | APRN-CNP | Nurse Practitioner | San Diego | CA | premium |
| 1285398578 | Smart, Heather | NP-BC | Nurse Practitioner | Tarzana | CA | premium |
| 1548914591 | Liao, Hsuan-Ling | Nurse Practitioner | San Jose | CA | premium | |
| 1184481335 | Beauvais, Griselda | Nurse Practitioner | Ventura | CA | premium | |
| 1194284166 | Wong, Melissa | Internal Medicine | La Mesa | CA | premium | |
| 1154888667 | Sahakian, Jacob | Nurse Practitioner | Burbank | CA | premium | |
| 1285280677 | Sarkisyan, Liya | FNP-C | Nurse Practitioner | Glendale | CA | premium |
| 1063129351 | Martignoni, Ashley | Nurse Practitioner | Pasadena | CA | premium | |
| 1780653832 | King, April | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Encinitas | CA | premium |
| 1942764386 | Hwang, Connie | PA | Physician Assistant | Oxnard | CA | premium |
| 1144996745 | Lee, Paul | Physician Assistant | Downey | CA | premium | |
| 1609128693 | Tang, Phuong | PA | Physician Assistant | Pasadena | CA | premium |
| 1982705901 | Scullon, Deborah | CRNA,BSN | Certified Registered Nurse Anesthetist (CRNA) | San Francisco | CA | premium |
| 1043062334 | Moreo, Hunter | PA-C | Physician Assistant | San Diego | CA | premium |
| 1326009994 | Ashman, Randy | CRNA | Certified Registered Nurse Anesthetist (CRNA) | San Diego | CA | premium |
| 1689757627 | Rembuskos, Terri | PA-C | Physician Assistant | Los Alamitos | CA | premium |
| 1750632253 | Tran, Evans | PA | Physician Assistant | Los Alamitos | CA | premium |
| 1154554657 | Ho, Nancy | M.D. | Gastroenterology | Portland | OR | premium |
| 1568557270 | Woodruff, Whitney | NP | Nurse Practitioner | Encinitas | CA | premium |
| 1124638663 | Gharakhani, Gayaneh | PA-C | Physician Assistant | Glendale | CA | premium |
| 1336807288 | Chow, Andy | Nurse Practitioner | Temple City | CA | premium | |
| 1831201326 | Kauffman, Marcus | MD | Urology | Torrance | CA | premium |
| 1447302120 | Mulkerrin, Elizabeth | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Daly City | CA | premium |
| 1366280471 | Lu, Kathy | NP | Nurse Practitioner | Arcadia | CA | premium |
| 1306201405 | Marfazelian, Elizabeth | FNP | Nurse Practitioner | Pasadena | CA | premium |
| 1598391740 | Hays, Sheena | NP | Nurse Practitioner | San Diego | CA | premium |
| 1548365216 | Schulman, David | MD | Gastroenterology | Burbank | CA | premium |
| 1285772004 | Aguirre, Thomas · member of 2 groups | M.D. | Gastroenterology | Santa Barbara | CA | premium |
| 1477148476 | Arcinue, Peta Noreen · member of 4 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Fort Sam Houston | TX | premium |
| 1942272075 | Beblawi, Ihab · member of 2 groups | M.D. | Gastroenterology | Pasadena | CA | premium |
| 1891476958 | Becerra, Azucena · member of 2 groups | Certified Registered Nurse Anesthetist (CRNA) | Fontana | CA | premium | |
| 1861562498 | Bernard, Karen · member of 3 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Mission Viejo | CA | premium |
| 1396005450 | Chen, Tien-Chun · member of 2 groups | MD | Gastroenterology | Temple City | CA | premium |
| 1518253319 | Chy, Dave · member of 4 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Orange | CA | premium |
| 1194753657 | Cortina, Galen · member of 2 groups | MD | Pathology | Van Nuys | CA | premium |
| 1427158245 | David, Richard · member of 2 groups | M.D. | Urology | Sherman Oaks | CA | premium |
| 1144425687 | Dicks, Brian · member of 2 groups | M.D. | Urology | San Diego | CA | premium |
| 1023166949 | Draper, Brad · member of 2 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | San Diego | CA | premium |
| 1629194881 | Estabrook, Lara · member of 2 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | San Diego | CA | premium |
| 1831363423 | Fitzpatrick, April · member of 2 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Encinitas | CA | premium |
| 1841933538 | Gestopa, Ryann Gelon · member of 2 groups | NP | Nurse Practitioner | Northridge | CA | premium |
| 1639526957 | Golpanian, Daniel · member of 2 groups | M.D. | Gastroenterology | Pasadena | CA | premium |
| 1124028345 | Guiv, Niloufar · member of 2 groups | M.D. | Internal Medicine | West Hills | CA | premium |
| 1245433549 | Guthmiller, Mun · member of 2 groups | NURSE ANESTHETIST | Certified Registered Nurse Anesthetist (CRNA) | Arcadia | CA | premium |
| 1639237720 | Hertz, Lisa · member of 2 groups | MD | Gastroenterology | Los Alamitos | CA | premium |
| 1861747396 | Holden, Marc · member of 2 groups | MD | Urology | San Diego | CA | premium |
| 1144232778 | Kearse, Wilfred · member of 2 groups | M.D. | Urology | La Mesa | CA | premium |
| 1780690313 | Kogan, Mark · member of 3 groups | M.D. | Gastroenterology | San Pablo | CA | premium |
| 1730296542 | Kovacs, Brent · member of 2 groups | MD | Gastroenterology | Santa Barbara | CA | premium |
| 1104577634 | Kuang, Li · member of 4 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Alhambra | CA | premium |
| 1386320331 | Kung, Jasmin · member of 2 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Mission Hills | CA | premium |
| 1881078467 | Lankarani, Daisy · member of 2 groups | M.D. | Gastroenterology | Santa Monica | CA | premium |
| 1841542313 | Lassen, David · member of 4 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Inglewood | CA | premium |
| 1023724036 | Lathers, Karen · member of 2 groups | FNP-BC | Nurse Practitioner | Oxnard | CA | premium |
| 1487721452 | Ligayo, Lloyd · member of 3 groups | Nurse Practitioner | Panorama City | CA | premium | |
| 1265100317 | Lin, Connie · member of 2 groups | Nurse Practitioner | Garden Grove | CA | premium | |
| 1760638282 | Lipshutz, H. · member of 6 groups | M.D. | Diagnostic Radiology | Portland | OR | premium |
| 1376006973 | Navales, Michael · member of 3 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Irvine | CA | premium |
| 1508906033 | Nguyen, Lien · member of 3 groups | NP | Nurse Practitioner | Mission Viejo | CA | premium |
| 1235698929 | O'leary, Mary · member of 2 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Oakland | CA | premium |
| 1265842934 | Pan, Dana · member of 2 groups | MD | Gastroenterology | San Gabriel | CA | premium |
| 1801003694 | Pe, Mark-Rally · member of 2 groups | M.D. | Urology | San Diego | CA | premium |
| 1508972191 | Roberts, James · member of 2 groups | M.D. | Urology | San Diego | CA | premium |
| 1336152982 | Salem, Carol · member of 2 groups | M.D. | Urology | San Diego | CA | premium |
| 1902399470 | Shetty, Zubin · member of 2 groups | MD | Urology | Encinitas | CA | premium |
| 1528033693 | Shindy, Waleed · member of 2 groups | M.D. | Gastroenterology | Pasadena | CA | premium |
| 1205199650 | Sircar, Sunny · member of 2 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Highland | CA | premium |
| 1861796948 | Steinberger, Jonathan · member of 6 groups | M.D. | Diagnostic Radiology | Portland | OR | premium |
| 1215374210 | Unterberg, Stephen · member of 2 groups | MD | Urology | San Diego | CA | premium |
| 1811003411 | Vapnek, Evan · member of 2 groups | M.D. | Urology | San Diego | CA | premium |
| 1417386251 | Vasquez, Reena · member of 2 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Monterey Park | CA | premium |
| 1437642352 | Walia, Arman · member of 3 groups | MD | Urology | San Diego | CA | premium |
| 1699832998 | Wilson, Patricia · member of 2 groups | CRNA | Certified Registered Nurse Anesthetist (CRNA) | Oakland | CA | premium |
Volumes are attributed to a group only for clinicians affiliated with exactly one group. Clinicians in several groups are listed ("member of N groups") but shown as "—" — their volume is not attributed to any single group. A "—" on a single-group clinician means CMS suppressed the figure (fewer than 11 beneficiaries), never zero. Beneficiary-episodes count CMS's per-setting beneficiary figures, not unique patients. Average Medicare payment is the amount Medicare actually paid per service, weighted by service volume across office and facility settings. Where the roster is a single clinician, that clinician's service counts match the group's attributed volume shown on the ranked results, so they are shown here; the per-provider split across a larger roster is a premium feature. See Methods & Sources.