Mark A. Folmsbee, D.O.
General Practice Physician · San Fernando, CA
Mark A. Folmsbee, D.O. is a general practice physician with a practice address in San Fernando, California, and NPI 1427393123, issued on Dec 6, 2012. Check the license (California 14847, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark A. Folmsbee
- Credential
- D.O.
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- 14847 CA
Self-reported in NPPES; status is on the state search - Practice location
- 732 Mott St Ste 100-110, San Fernando, CA 91340
- Phone
- (818) 963-5690
- Enumerated
- Dec 6, 2012
- Record last updated
- Oct 27, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 1,956 in California → Look up another NPI →
Also registered at 732 Mott St Ste 100-110
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark A. Folmsbee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 14847Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average general practice physician in 2024
2,422 Medicare Part D claims for 320 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Atorvastatin Calcium144 claims
- Lisinopril111 claims
- Amlodipine Besylate107 claims
- Levothyroxine Sodium99 claims
- Losartan Potassium90 claims
- Albuterol Sulfate Hfa66 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: $14.27
1 payment: food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 4,259 providers of this specialty with any payment received $1,273.40 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.
Mark A. Folmsbee among 1,956 general practice physician records in California
Mark A. Folmsbee, D.O. is one of 1,956 general practice physician records with a practice address in California. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 64% of them.
- NPI issued2012 · 64% of these records are older, 32% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileNo · 27% of these records are
- Record last updated2020 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in California
There are 1,956 general practice physician records in California.
All 1,956 in California → Every provider in San Fernando → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Ali Anari, M.D.San Fernando, CA 913401912252743
- Masoud Bamdad, M.D.San Fernando, CA 913401134146012
- Firooz MarviSan Fernando, CA 913401831317833
- Michel Mikhael, M.D.Sylmar, CA 913421902951460
- Mahamaya Shenoy, MDNorth Hills, CA 913431861536591
- Minoo Azadeh, MDGranada Hills, CA 913441548372824
- Stephanie JohnwellGranada Hills, CA 913441386444933
- Kamran Kamrava, MDReseda, CA 913351053483800
Common questions
What is Mark A. Folmsbee, D.O.'s NPI number?
Mark A. Folmsbee, D.O.'s National Provider Identifier (NPI) is 1427393123, issued on Dec 6, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Folmsbee, D.O. located?
The NPPES record lists a practice address at 732 Mott St Ste 100-110, San Fernando, CA, 91340. Phone: (818) 963-5690. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Folmsbee, D.O.'s license?
NPPES lists California license number 14847, 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 Mark A. Folmsbee, D.O. prescribe under Medicare Part D?
In 2024, Mark A. Folmsbee, D.O. had 2,422 Medicare Part D claims for 320 beneficiaries; the average among general practice physician prescribers was 3,030. 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.