Maha B. Toma, M.D.
Internal Medicine Physician · Lafayette, CA
Maha B. Toma, M.D. is an internal medicine physician with a practice address in Lafayette, California, and NPI 1427108125, issued on Jan 12, 2007. Check the license (California C51245, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Maha B. Toma
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C51245 CA
K5229 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3466 Mt Diablo Blvd, Lafayette, CA 94549
- Phone
- (925) 284-4442
- Enumerated
- Jan 12, 2007
- Record last updated
- Aug 27, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (925) 283-8687
- Medicare enrollment
- Enrolled (PECOS I20131230001052); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 3466 Mt Diablo Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Neil Fruman, M.D.Family Medicine Physician1982642047
- Aimee Keyashian, MDInternal Medicine Physician1578806329
- Debra Levinsky, M.D.Specialist1326111832
- Bridget NelsonFamily Nurse Practitioner1447692728
- Christopher Simmons, M.D.Internal Medicine Physician1083630081
- Herbert Ure, M.D.Family Medicine Physician1144248402
Verify Maha B. Toma in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C51245Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average internal medicine physician in 2024
3,235 Medicare Part D claims for 436 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium290 claims
- Levothyroxine Sodium287 claims
- Amlodipine Besylate237 claims
- Rosuvastatin Calcium190 claims
- Losartan Potassium189 claims
- Lisinopril111 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: $2,126.16
51 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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
- John Muir Physician NetworkLafayette, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maha B. Toma among 17,696 internal medicine physician records in California
Maha B. Toma, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1985 · median 2004 among the 11,065 with a school on file
- Record last updated2013 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 internal medicine physician records list a practice address in Lafayette
They are 6 of the 736 NPPES records with a practice address in Lafayette, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Lafayette → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Aimee Keyashian, MDLafayette, CA 945491578806329
- Vona Wright Lorenzana, M.D.Lafayette, CA 945491992752661
- Leonard Saputo, MDLafayette, CA 945491295825438
- Roland Schoen, MDLafayette, CA 945491811260185
- Christopher Simmons, M.D.Lafayette, CA 945491083630081
- Michael Alper, M.D.Livermore, CA 945501801880505
- Nader Kaldas, M.D.Livermore, CA 945501760492391
- Samata Kanagala, M.DLivermore, CA 945501710902499
Common questions
What is Maha B. Toma, M.D.'s NPI number?
Maha B. Toma, M.D.'s National Provider Identifier (NPI) is 1427108125, issued on Jan 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Maha B. Toma, M.D. located?
The NPPES record lists a practice address at 3466 Mt Diablo Blvd, Lafayette, CA, 94549. Phone: (925) 284-4442. Providers update this record themselves, so call before visiting.
How can I verify Maha B. Toma, M.D.'s license?
NPPES lists California license number C51245, 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 Maha B. Toma, M.D. prescribe under Medicare Part D?
In 2024, Maha B. Toma, M.D. had 3,235 Medicare Part D claims for 436 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.