Marian Pak, D.O.
Obstetrics & Gynecology Physician · Los Angeles, CA
Marian Pak, D.O. is an obstetrics & gynecology physician with a practice address in Los Angeles, California, and NPI 1790128841, issued on Apr 9, 2013. Check the license (California 20A13783, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marian Pak
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 20A13783 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1300 N Vermont Ave Ste 1001, Los Angeles, CA 90027
- Phone
- (323) 473-5499
- Enumerated
- Apr 9, 2013
- Record last updated
- Jun 4, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180308002018); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 1300 N Vermont Ave Ste 1001
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Pia Khuu, PA-CPhysician Assistant1881880912
- Eijean Wu, MD, MPPGynecologic Oncology Physician1396024600
Verify Marian Pak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A13783Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 76.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $50.77
2 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Pih Health PhysiciansLa Mirada, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marian Pak among 5,088 obstetrics & gynecology physician records in California
Marian Pak, D.O. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 78% of them.
- NPI issued2013 · 78% of these records are older, 20% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2013 · median 2004 among the 2,700 with a school on file
- Record last updated2019 · 64% 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 California 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 California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Los Angeles → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Jonathan Azizzadeh, M.D.Los Angeles, CA 900271215949367
- Robert Chu, MDLos Angeles, CA 900271629145560
- Edward Drenth, MDLos Angeles, CA 900271578630414
- Lorrie Dubow, MDLos Angeles, CA 900271720159759
- William Fong, MDLos Angeles, CA 900271568533511
- Gladys Hernandez, MDLos Angeles, CA 900271255408084
- Eduard Minas, MDLos Angeles, CA 900271710097670
- Brian Miyazaki, MDLos Angeles, CA 900271235206111
Common questions
What is Marian Pak, D.O.'s NPI number?
Marian Pak, D.O.'s National Provider Identifier (NPI) is 1790128841, issued on Apr 9, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Marian Pak, D.O. located?
The NPPES record lists a practice address at 1300 N Vermont Ave Ste 1001, Los Angeles, CA, 90027. Phone: (323) 473-5499. Providers update this record themselves, so call before visiting.
How can I verify Marian Pak, D.O.'s license?
NPPES lists California license number 20A13783, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Marian Pak, D.O.'s MIPS final score?
The 2023 MIPS final score is 76.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.