James Kevin Massengill, M.D.
Obstetrics & Gynecology Physician · Union City, CA
James Kevin Massengill, M.D. is an obstetrics & gynecology physician with a practice address in Union City, California, and NPI 1144308990, issued on Nov 1, 2006. Check the license (California G65344, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- James Kevin Massengill
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G65344 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3553 Whipple Road, Union City, CA 94587
- Phone
- (510) 454-1000
- Enumerated
- Nov 1, 2006
- Record last updated
- May 21, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid ID
- 00G653440 CA
- Entity
- Type 1 · individual
Also registered at 3553 Whipple Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph Bachicha, M.D.Obstetrics & Gynecology Physician1023180775
- Eric Brondfield, MDInternal Medicine Physician1033297882
- Susana Chen, RPHPharmacist1750812384
- Michael Hardy, M.D.Dermatology Physician1437237203
- Sally Lin, MDOphthalmology Physician1023252855
- Scott Sullivan, M.D.Internal Medicine Physician1952480667
Verify James Kevin Massengill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G65344Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13 obstetrics & gynecology physician records list a practice address in Union City
They are 13 of the 1,006 NPPES records with a practice address in Union City, and 5,088 obstetrics & gynecology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 13 in Union City → All 5,088 in California → Every provider in Union City →
Other obstetrics & gynecology physician records in California
- Ingrid Aalami, MDSan Jose, CA1952376550
- Avisa Abaian- Eagar, M.D.Orange, CA1316057755
- Derek Abbassi, MDWalnut Creek, CA1841364155
- Ahmed Abdelaziz, MDSanta Maria, CA1790039733
- Alireza Abdollah Shamshirsaz, M.D.Palo Alto, CA1881804235
- Nicole Abell, DOVentura, CA1811243603
- Zachary AbelsonLos Angeles, CA1689237414
- Ray Abinader, M.D.Loma Linda, CA1770901548
- Tarek Abou El Kheir, M.D.San Bernardino, CA1477521789
- Nada Abou-HaibaLos Angeles, CA1134067549
Common questions
What is James Kevin Massengill, M.D.'s NPI number?
James Kevin Massengill, M.D.'s National Provider Identifier (NPI) is 1144308990, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Kevin Massengill, M.D. located?
The NPPES record lists a practice address at 3553 Whipple Road, Union City, CA, 94587. Phone: (510) 454-1000. Providers update this record themselves, so call before visiting.
How can I verify James Kevin Massengill, M.D.'s license?
NPPES lists California license number G65344, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.