NPPES file of Aug 9, 2026

Janet Jinyoung Ko, MD

Obstetrics & Gynecology Physician · Philadelphia, PA

Janet Jinyoung Ko, MD is an obstetrics & gynecology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1780627968, issued on Jun 14, 2006. Check the license (Pennsylvania MD428999, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1780627968
Name
Janet Jinyoung Ko
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
MD428999 PA
Self-reported in NPPES; status is on the state search
Practice location
5401 Old York RD, Philadelphia, PA 19141
Phone
(215) 456-6990
Enumerated
Jun 14, 2006
Record last updated
Jul 11, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(215) 456-6967
Medicare enrollment
Enrolled (PECOS I20060727000182); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest obstetrics & gynecology physician records → All 1,974 in Pennsylvania → Look up another NPI →

Also registered at 5401 Old York RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Amro Abdulsattar, M.DNeurology Physician1316206667
  2. Richard Bennett, MDNeurology Physician1861446700
  3. Daniel Birnbaum, D.O.Epilepsy Physician1538421433
  4. Christopher Bradley, M.D., PH.D.Neurology Physician1164580098
  5. Christopher Brennan, ODOptometrist1801806625
  6. Rashad Choudry, MDVascular Surgery Physician1407077316

Verify Janet Jinyoung Ko in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
    Search for license MD428999    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Pennsylvania license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Fornance Physician Services IncNorristown, PA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Janet Jinyoung Ko among 1,974 obstetrics & gynecology physician records in Pennsylvania

Janet Jinyoung Ko, 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 2006, is newer than 13% of them.

  • NPI issued2006 · 13% of these records are older, 56% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2002 · median 2007 among the 1,176 with a school on file
  • Record last updated2020 · 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

  1. Stephanie Almeida, DOPhiladelphia, PA 191411750450839
  2. Oren Azulay, M.D.Philadelphia, PA 191411417165218
  3. Bruce Berger, M.D.Phila, PA 191411427077940
  4. Morgan BooherPhiladelphia, PA 191411245611839
  5. Selina Davis, MDPhiladelphia, PA 191411154760882
  6. David Jaspan, DOPhiladelphia, PA 191411619046562
  7. Hyun-Joo Lee, M.D.Philadelphia, PA 191411710099858
  8. Aishat Olatunde, MDPhiladelphia, PA 191411891175980

Common questions

What is Janet Jinyoung Ko, MD's NPI number?

Janet Jinyoung Ko, MD's National Provider Identifier (NPI) is 1780627968, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Janet Jinyoung Ko, MD located?

The NPPES record lists a practice address at 5401 Old York RD, Philadelphia, PA, 19141. Phone: (215) 456-6990. Providers update this record themselves, so call before visiting.

How can I verify Janet Jinyoung Ko, MD's license?

NPPES lists Pennsylvania license number MD428999, 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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.