Joanna Gao, MD
Obstetrics & Gynecology Physician · Philadelphia, PA
Joanna Gao, MD is an obstetrics & gynecology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1548896566, issued on Mar 21, 2020. Check the license (Pennsylvania MD485518, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Joanna Gao
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- MD485518 PA
Self-reported in NPPES; status is on the state search - Practice location
- 833 Chestnut St, Philadelphia, PA 19107
- Phone
- (215) 955-5000
- Enumerated
- Mar 21, 2020
- Record last updated
- Sep 16, 2024
- Medicare enrollment
- Enrolled (PECOS I20240916003426); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,974 in Pennsylvania → Look up another NPI →
Also registered at 833 Chestnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kendall Annable, MSGenetic Counselor (M.S.)1477685097
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- Christine Arenson, M.D.Family Medicine Physician1316970403
Verify Joanna Gao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD485518Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
21 Medicare Part D claims for 12 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Jefferson University PhysiciansPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joanna Gao among 1,974 obstetrics & gynecology physician records in Pennsylvania
Joanna Gao, MD is one of 1,974 obstetrics & gynecology physician records with a practice address in Pennsylvania. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 85% of them.
- NPI issued2020 · 85% of these records are older, 11% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2020 · median 2007 among the 1,176 with a school on file
- Record last updated2024 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Pennsylvania
There are 1,974 obstetrics & gynecology physician records in Pennsylvania.
All 1,974 in Pennsylvania → Every provider in Philadelphia → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Rita Borromeo, MDPhiladelphia, PA 191071366474942
- Jennifer Brandenburg, MDPhiladelphia, PA 191071902830979
- Sandra Dayaratna, MDPhiladelphia, PA 191071275500712
- Michael Feinstein, MDPhiladelphia, PA 191071275592396
- Osnat Geifman-Holtzman, MDPhiladelphia, PA 191071033107057
- Jay Goldberg, M.D.Philadelphia, PA 191071780603464
- Rebecca Jackson, M.D.Philadelphia, PA 191071619934502
- Dennis Lorell, M.D.Philadelphia, PA 191071598784290
Common questions
What is Joanna Gao, MD's NPI number?
Joanna Gao, MD's National Provider Identifier (NPI) is 1548896566, issued on Mar 21, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Joanna Gao, MD located?
The NPPES record lists a practice address at 833 Chestnut St, Philadelphia, PA, 19107. Phone: (215) 955-5000. Providers update this record themselves, so call before visiting.
How can I verify Joanna Gao, MD's license?
NPPES lists Pennsylvania license number MD485518, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joanna Gao, MD prescribe under Medicare Part D?
In 2024, Joanna Gao, MD had 21 Medicare Part D claims for 12 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.