Alan D. Berkenwald, MD
Internal Medicine Physician · Amherst, MA
Alan D. Berkenwald, MD is an internal medicine physician with a practice address in Amherst, Massachusetts, and NPI 1033188636, issued on Mar 16, 2006. Check the license (Massachusetts 44660, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Alan D. Berkenwald
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 44660 MA
Self-reported in NPPES; status is on the state search - Practice location
- 31 Hall Dr, Amherst, MA 01002
- Phone
- (413) 256-8561
- Enumerated
- Mar 16, 2006
- Record last updated
- Jan 3, 2024
- Fax
- (866) 644-0869
- Medicaid ID
- 1033188636 MA
- Medicare enrollment
- Enrolled (PECOS I20101207000037); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 1978
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 31 Hall Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alan D. Berkenwald in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 44660Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
130 Medicare Part D claims for 68 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl20 claims
- Cephalexin11 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.
Bills Medicare through one group practice
- Valley Medical Group PCAmherst, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alan D. Berkenwald among 6,825 internal medicine physician records in Massachusetts
Alan D. Berkenwald, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1978 · median 2004 among the 4,103 with a school on file
- Record last updated2024 · 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 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 internal medicine physician records list a practice address in Amherst
They are 13 of the 769 NPPES records with a practice address in Amherst, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Amherst → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rachel Andres, M.D.Pelham, MA 010021710272943
- Lesley Harrington, MDAmherst, MA 010021326002833
- Samah Jafari, M.D.Amherst, MA 010021972757946
- Donald Lundgren, M.D.Amherst, MA 010021205957354
- Yarima Santiago, MDAmherst, MA 010021316145196
- Denise Spence, MDAmherst, MA 010021447358106
- Shayne Taylor, M.D.Amherst, MA 010021811316045
- Robert Vigderman, M.D.Amherst, MA 010021831119478
Common questions
What is Alan D. Berkenwald, MD's NPI number?
Alan D. Berkenwald, MD's National Provider Identifier (NPI) is 1033188636, issued on Mar 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alan D. Berkenwald, MD located?
The NPPES record lists a practice address at 31 Hall Dr, Amherst, MA, 01002. Phone: (413) 256-8561. Providers update this record themselves, so call before visiting.
How can I verify Alan D. Berkenwald, MD's license?
NPPES lists Massachusetts license number 44660, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alan D. Berkenwald, MD prescribe under Medicare Part D?
In 2024, Alan D. Berkenwald, MD had 130 Medicare Part D claims for 68 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.