Melissa M. Grier, M.D.
Obstetrics & Gynecology Physician · Pasadena, CA
Melissa M. Grier, M.D. is an obstetrics & gynecology physician with a practice address in Pasadena, California, and NPI 1861484420, issued on Aug 19, 2005. Check the license (California A82969, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Melissa M. Grier
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A82969 CA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Fairmount Ave, Pasadena, CA 91105
- Phone
- (626) 440-0011
- Enumerated
- Aug 19, 2005
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (626) 628-3073
- Medicare enrollment
- Enrolled (PECOS I20051012001140); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 2001
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 800 Fairmount Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Melissa M. Grier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A82969Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
131 Medicare Part D claims for 32 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol25 claims
- Estradiol (Twice Weekly)16 claims
- Progesterone12 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: $44.61
2 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer 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
- Obhg California PCLa Mesa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Melissa M. Grier among 5,088 obstetrics & gynecology physician records in California
Melissa M. Grier, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2001 · median 2004 among the 2,700 with a school on file
- Record last updated2007 · 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 Pasadena → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Ebenezer Ajilore, M.D.Pasadena, CA 911051891787537
- Jennie Chang, M.D.Pasadena, CA 911051982668422
- Della Fong, M.D.Pasadena, CA 911051700813359
- Wilbert Henneberg, MDPasadena, CA 911051265433155
- Bryan Jick, MDPasadena, CA 911051720051436
- Joseph Li, M.D.Pasadena, CA 911051770573941
- James Macer, MDPasadena, CA 911051134129711
- George Matsuda, MDPasadena, CA 911051144220815
Common questions
What is Melissa M. Grier, M.D.'s NPI number?
Melissa M. Grier, M.D.'s National Provider Identifier (NPI) is 1861484420, issued on Aug 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Melissa M. Grier, M.D. located?
The NPPES record lists a practice address at 800 Fairmount Ave, Pasadena, CA, 91105. Phone: (626) 440-0011. Providers update this record themselves, so call before visiting.
How can I verify Melissa M. Grier, M.D.'s license?
NPPES lists California license number A82969, 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 Melissa M. Grier, M.D. prescribe under Medicare Part D?
In 2024, Melissa M. Grier, M.D. had 131 Medicare Part D claims for 32 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.