Erin Backenstow Marcin, MD
Obstetrics & Gynecology Physician · Sacramento, CA
Erin Backenstow Marcin, MD is an obstetrics & gynecology physician with a practice address in Sacramento, California, and NPI 1245302082, issued on Nov 15, 2006. Check the license (California G79185, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Erin Backenstow Marcin
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G79185 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2025 Morse Ave, Sacramento, CA 95825
- Phone
- (916) 973-5000
- Enumerated
- Nov 15, 2006
- Record last updated
- Jan 6, 2022
- Medicaid ID
- 00G791850 CA
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 2025 Morse Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Paul Akins, MDNeurology Physician1952489528
Verify Erin Backenstow Marcin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G79185Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
197 Medicare Part D claims for 82 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Estradiol73 claims
- Estring22 claims
- Yuvafem19 claims
- Trospium Chloride13 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.
Erin Backenstow Marcin among 5,088 obstetrics & gynecology physician records in California
Erin Backenstow Marcin, MD 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2022 · 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 Sacramento → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Bruce Bob, M.D.Sacramento, CA 958251841267234
- Jean Cordalis, MDSacramento, CA 958251770661407
- Erwin Eichhorn, M.D.Sacramento, CA 958251245206630
- Mary Finegan, M.D.Sacramento, CA 958251801862297
- Susan Gorman, M.D., P.C.Sacramento, CA 958251841240504
- Laurie Gregg, M.D.Sacramento, CA 958251689640179
- Stephen Hiuga, M.D.Sacramento, CA 958251467428789
- Namin Kuachusri, MDSacramento, CA 958251154409845
Common questions
What is Erin Backenstow Marcin, MD's NPI number?
Erin Backenstow Marcin, MD's National Provider Identifier (NPI) is 1245302082, issued on Nov 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Erin Backenstow Marcin, MD located?
The NPPES record lists a practice address at 2025 Morse Ave, Sacramento, CA, 95825. Phone: (916) 973-5000. Providers update this record themselves, so call before visiting.
How can I verify Erin Backenstow Marcin, MD's license?
NPPES lists California license number G79185, 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 Erin Backenstow Marcin, MD prescribe under Medicare Part D?
In 2024, Erin Backenstow Marcin, MD had 197 Medicare Part D claims for 82 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.