Frank Lei Ma, MD
Hospitalist Physician · Monterey, CA
Frank Lei Ma, MD is a hospitalist physician with a practice address in Monterey, California, and NPI 1851972442, issued on Apr 15, 2021. Check the license (California A193027, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Frank Lei Ma
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A193027 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23625 Holman Hwy, Monterey, CA 93940
- Phone
- (831) 624-5311
- Enumerated
- Apr 15, 2021
- Record last updated
- Sep 3, 2024
- Medicare enrollment
- Enrolled (PECOS I20240710004236); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 23625 Holman Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rachel Badger, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1942055132
- Shoshauna Baer, M.D.Hospitalist Physician1881126209
Verify Frank Lei Ma in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A193027Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average hospitalist physician in 2024
237 Medicare Part D claims for 45 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium22 claims
- Gabapentin15 claims
- Losartan Potassium14 claims
- Januvia12 claims
- Metformin Hcl12 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: $778.74
8 payments; by number, the most common kind was food and beverage; the largest payer was ShockWave Medical, Inc. The 7,324 providers of this specialty with any payment received $494.84 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
- Monterey Hospitalist Medical GroupMonterey, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Frank Lei Ma among 3,099 hospitalist physician records in California
Frank Lei Ma, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 90% of them.
- NPI issued2021 · 90% of these records are older, 6% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2021 · median 2010 among the 2,505 with a school on file
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 hospitalist physician records list a practice address in Monterey
They are 30 of the 1,945 NPPES records with a practice address in Monterey, and 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Monterey → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Jeffrey Barnum, MDMonterey, CA 939401912932211
- Charles Bates, MDMonterey, CA 939401356411268
- Michael Davis, DOMonterey, CA 939401548259435
- David Eikenberry, MDMonterey, CA 939401679661409
- Sergio Garcia-Toledo, M.D.Monterey, CA 939401831329192
- Mikko Helenius, M.D.Monterey, CA 939401962431940
- Tanvir Khera, M.D.Monterey, CA 939401750598348
- Mitsuyo Kohama, M.D.Monterey, CA 939401013145267
Common questions
What is Frank Lei Ma, MD's NPI number?
Frank Lei Ma, MD's National Provider Identifier (NPI) is 1851972442, issued on Apr 15, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Frank Lei Ma, MD located?
The NPPES record lists a practice address at 23625 Holman Hwy, Monterey, CA, 93940. Phone: (831) 624-5311. Providers update this record themselves, so call before visiting.
How can I verify Frank Lei Ma, MD's license?
NPPES lists California license number A193027, 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 Frank Lei Ma, MD prescribe under Medicare Part D?
In 2024, Frank Lei Ma, MD had 237 Medicare Part D claims for 45 beneficiaries; the average among hospitalist physician prescribers was 521. 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.