Mohammad Amjad Arain, M.D.
Internal Medicine Physician · Santa Maria, CA
Mohammad Amjad Arain, M.D. is an internal medicine physician with a practice address in Santa Maria, California, and NPI 1639167158, issued on Oct 10, 2005. Check the license (California A38905, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mohammad Amjad Arain
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A38905 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1505 Shepard Dr, Santa Maria, CA 93454
- Phone
- (805) 928-2645
- Enumerated
- Oct 10, 2005
- Record last updated
- Apr 8, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (805) 928-1995
- Medicaid ID
- 00A389050 CA
- Medicare enrollment
- Enrolled (PECOS I20100126000828); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1505 Shepard Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kishor Popat, M. D.Specialist1245370105
- Benita Young, MDPediatric Adolescent Medicine Physician1013006949
Verify Mohammad Amjad Arain in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A38905Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average internal medicine physician in 2024
9,181 Medicare Part D claims for 484 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 336 claims were for opioids.
Most prescribed
- Atorvastatin Calcium537 claims
- Amlodipine Besylate458 claims
- Diclofenac Sodium347 claims
- Levothyroxine Sodium283 claims
- Metformin Hcl257 claims
- Benazepril Hcl255 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: $200.95
11 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. 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
- Central Coast Family Care Medical Associates IncSanta Maria, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mohammad Amjad Arain among 17,696 internal medicine physician records in California
Mohammad Amjad Arain, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1975 · median 2004 among the 11,065 with a school on file
- Record last updated2020 · 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).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Santa Maria → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Elena Agafonova, M.D.Santa Maria, CA 934541558757666
- Nicandro Castaneda, M.D.Santa Maria, CA 934541578595245
- Yosef Diab, MDSanta Maria, CA 934541053948026
- Hugh Hatfield, M. D.Santa Maria, CA 934541356360218
- Albert Hawkins, MDSanta Maria, CA 934541588664478
- Siri Atma Khalsa, MDSanta Maria, CA 934541073701785
- Ahmad Nooristani, M.D.Santa Maria, CA 934541659537306
- Elham Novin Baheran, MDSanta Maria, CA 934541245432897
Common questions
What is Mohammad Amjad Arain, M.D.'s NPI number?
Mohammad Amjad Arain, M.D.'s National Provider Identifier (NPI) is 1639167158, issued on Oct 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mohammad Amjad Arain, M.D. located?
The NPPES record lists a practice address at 1505 Shepard Dr, Santa Maria, CA, 93454. Phone: (805) 928-2645. Providers update this record themselves, so call before visiting.
How can I verify Mohammad Amjad Arain, M.D.'s license?
NPPES lists California license number A38905, 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 Mohammad Amjad Arain, M.D. prescribe under Medicare Part D?
In 2024, Mohammad Amjad Arain, M.D. had 9,181 Medicare Part D claims for 484 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.