What is Alan Berkenwald's NPI number?

Alan Berkenwald's National Provider Identifier (NPI) is 1033188636, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Alan Berkenwald's specialty?

Alan Berkenwald is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Alan Berkenwald located?

Alan Berkenwald's practice location on file with NPPES is 31 Hall Dr, Amherst, MA 01002.

What is Alan Berkenwald's phone number?

The practice phone number listed in the NPPES registry for Alan Berkenwald is (413) 256-8561.

Does Alan Berkenwald accept Medicare?

Alan Berkenwald is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Alan Berkenwald's NPI active?

Yes — Alan Berkenwald's NPI (1033188636) is active in the NPPES registry as of the last update on 2024-01-03.

IndividualActiveAccepts Medicare

Alan Berkenwald, MD

NPI 1033188636 · Internal Medicine Physician · Amherst, MA

Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Alan Berkenwald, MD is a Internal Medicine Physician provider in Amherst, MA (NPI 1033188636).

Provider details

NPI number: 1033188636
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 44660 (MA)

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 44660 (MA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(75/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
20 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
5 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
266 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	138	$92
Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211	30	$16
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	22	$130
Insertion of Needle Into Vein for Collection of Blood Sample36415	19	$9
Automated Urinalysis Test81003	18	$2
Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.

Drug	Part D claims (2024)
Tamsulosin Hcl	20
Cephalexin	11

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Practice location

31 Hall Dr

Amherst, MA 01002

Phone: (413) 256-8561

Fax: (866) 644-0869

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Mailing address