Karine Hajyan, DO
Obstetrics & Gynecology Physician · Lafayette, CA
Karine Hajyan, DO is an obstetrics & gynecology physician with a practice address in Lafayette, California, and NPI 1154644425, issued on Mar 1, 2010. Check the license (California 20A12220, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karine Hajyan
- Credential
- DO
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 20A12220 CA
Self-reported in NPPES; status is on the state search - Practice location
- 970 Dewing Ave Ste 301, Lafayette, CA 94549
- Phone
- (925) 385-7023
- Enumerated
- Mar 1, 2010
- Record last updated
- Aug 2, 2026
- Medicare enrollment
- Enrolled (PECOS I20121029000686); may accept Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Verify Karine Hajyan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A12220Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
72 Medicare Part D claims for 23 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 54% of claims.
Most prescribed
- Myrbetriq26 claims
- Estradiol16 claims
- Premarin11 claims
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.
Industry payments in 2024: $20.69
1 payment: food and beverage; the largest payer was Edwards Lifesciences Corporation. 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 2 group practices
- John Muir Physician NetworkOrinda, CA
- Obstetrix Medical Group OF California A Professional CorporationSalinas, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karine Hajyan among 5,088 obstetrics & gynecology physician records in California
Karine Hajyan, DO 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 2010, is newer than 70% of them.
- NPI issued2010 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2007 · median 2004 among the 2,700 with a school on file
- Record last updated2026 · 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).
6 obstetrics & gynecology physician records list a practice address in Lafayette
They are 6 of the 736 NPPES records with a practice address in Lafayette, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Lafayette → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Lee Christianson, MDLafayette, CA 945491922363746
- Andrea Mendelssohn, MD, FACOG, FABIHMLafayette, CA 945491144275264
- Anahat Sandhu, M.D.Lafayette, CA 945491417988999
- Elisabeth Schleuning, MDLafayette, CA 945491538124102
- Nancy Wigginton, MDLafayette, CA 945491396824173
- Michael Bleecker, M.D.Livermore, CA 945501437218328
- Aditi Bommireddy, MDLivermore, CA 945511205398609
- Nancy Everett, MDLivermore, CA 945511699853796
Common questions
What is Karine Hajyan, DO's NPI number?
Karine Hajyan, DO's National Provider Identifier (NPI) is 1154644425, issued on Mar 1, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Karine Hajyan, DO located?
The NPPES record lists a practice address at 970 Dewing Ave Ste 301, Lafayette, CA, 94549. Phone: (925) 385-7023. Providers update this record themselves, so call before visiting.
How can I verify Karine Hajyan, DO's license?
NPPES lists California license number 20A12220, 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.
How much does Karine Hajyan, DO prescribe under Medicare Part D?
In 2024, Karine Hajyan, DO had 72 Medicare Part D claims for 23 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.