Derrick Barnes, M.D.
Obstetrics & Gynecology Physician · Marina, CA
Derrick Barnes, M.D. is an obstetrics & gynecology physician with a practice address in Marina, California, and NPI 1336236488, issued on Oct 9, 2006. Check the license (California C133289, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Derrick Barnes
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- C133289 CA
2008-0337 NC
LL 27176 SC
Self-reported in NPPES; status is on the state search - Practice location
- 2930 2ND Ave Ste 200, Marina, CA 93933
- Phone
- (831) 582-2100
- Enumerated
- Oct 9, 2006
- Entity
- Type 1 · individual
Also registered at 2930 2ND Ave Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jean-Philippe Abraham, MDFamily Medicine Physician1427463140
- Kathleen Chase, DOFamily Medicine Physician1407004591
- Mary ChickFamily Medicine Physician1285194183
- Marcus De Ranieri, DOFamily Medicine Physician1891351615
- Shirley Dickinson, M.D.Sleep Medicine (Internal Medicine) Physician1679500565
- Angelika Drake, NPFamily Nurse Practitioner1376369876
Verify Derrick Barnes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C133289Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
57% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
80 Medicare Part D claims for 26 beneficiaries, against an average of 188 among the 27,363 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol12 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: $5.86
1 payment, mostly food and beverage; the largest payer was Organon Llc. The 20,757 providers of this specialty with any payment received $1,147.37 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.
One hospital or facility affiliation
- Montage Medical GroupMarina, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Obstetrics & Gynecology Physician providers in California
There are 5,004 obstetrics & gynecology physician records in California.
Other obstetrics & gynecology physician records in California
- Ingrid Aalami, MDSan Jose, CA1952376550
- Avisa Abaian- Eagar, M.D.Orange, CA1316057755
- Derek Abbassi, MDWalnut Creek, CA1841364155
- Nicole Abell, DOVentura, CA1811243603
- Zachary AbelsonLos Angeles, CA1689237414
- Sina Abhari, MDNewport Beach, CA1073955290
- Ray Abinader, M.D.Loma Linda, CA1770901548
- Tarek Abou El Kheir, M.D.San Bernardino, CA1477521789
- Nada Abou-HaibaLos Angeles, CA1134067549
- Ariel Abrahams, MDDowney, CA1376726174
Common questions
What is Derrick Barnes, M.D.'s NPI number?
Derrick Barnes, M.D.'s National Provider Identifier (NPI) is 1336236488, issued on Oct 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Derrick Barnes, M.D. located?
The NPPES record lists a practice address at 2930 2ND Ave Ste 200, Marina, CA, 93933. Phone: (831) 582-2100. Providers update this record themselves, so call before visiting.
How can I verify Derrick Barnes, M.D.'s license?
NPPES lists California license number C133289, 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 Derrick Barnes, M.D. prescribe under Medicare Part D?
In 2024, Derrick Barnes, M.D. had 80 Medicare Part D claims for 26 beneficiaries; the average among obstetrics & gynecology physician prescribers was 188. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.