DR. ALAN ERWIN DONNENFELD M.D.
NPI 1205894219
Medical Genetics - Clinical Genetics (M.D.) in Phoenixville, PA

Q: What is Alan Donnenfeld's NPI number?

The NPI number for Alan Donnenfeld is 1205894219. It was assigned to this individual provider in the NPPES registry on May 2, 2006.

Q: What is Alan Donnenfeld's specialty?

The primary specialty registered for this NPI is Medical Genetics, specializing in Clinical Genetics (M.D.), with taxonomy code 207SG0201X.

Q: When was this NPI record last updated?

The NPPES record for Alan Donnenfeld was last updated on July 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 02, 2006PECOS EnrolledAccepts Medicare Assignment

450 CRESSON BLVD STE 300, PHOENIXVILLE, PA 19460(484) 831-0200(484) 831-0209 Get Directions Write a Review

NPPES record last updated: July 7, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 7, 2025, Jul 8, 2021 (2 updates tracked since 2021).

On this page

About Dr. Alan Erwin Donnenfeld M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ALAN ERWIN DONNENFELD M.D. (NPI 1205894219) is an individual clinical genetics (m.d.) provider in Phoenixville, Pennsylvania, licensed in Pennsylvania (MD027052E) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of Geisel School Of Medicine At Dartmouth (1981).

NPPES Registry Identity

NPI1205894219

Entity TypeIndividualMale

Primary Taxonomy207SG0201X

Provider Legal NameDR. ALAN ERWIN DONNENFELDCredential: M.D.

Location Address450 CRESSON BLVD STE 300Phoenixville, PA 19460-6146

Mailing Address450 Cresson Blvd Ste 300Phoenixville, PA 19460-6146 · (484) 831-0200 · Fax (484) 831-0209

Phone(484) 831-0200

Fax(484) 831-0209

Sole ProprietorNo

Medical School CMSGeisel School Of Medicine At DartmouthGraduated 1981

Enumeration DateMay 2, 2006

Last NPPES UpdateJuly 7, 20252 updates tracked since enumeration

NPPES CertifiedJuly 7, 2025

✔ NPI 1205894219 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMedical Genetics · Clinical Genetics (M.D.)Allopathic & Osteopathic Physicians

Taxonomy Code207SG0201X

Licenses✔ Licensed in PA · MD027052E✔ Licensed in PA · MT006828T✔ Licensed in NJ · 25MA04955700✔ Licensed in NY · 205012-1✔ Licensed in DE · C1-0006729✔ Licensed in MA · 153714✔ Licensed in CT · 037414

Definition

A clinical geneticist demonstrates competence in providing comprehensive diagnostic, management and counseling services for genetic disorders.

450 CRESSON BLVD STE 300, Phoenixville, PA 19460

Open in Google Maps ↗

Other Identifiers 13

Medicaid00108294PA

Other1652891PA · Bc/bs Highmark Group

Other2330386000PA · Bc/bs Key, Per. Group

Other30018989PA · Keystone Mercy Group

Other3971180PA · Aetna Us Healthcare Hmo

Other33658PA · Health Partners

Other33659PA · Health Partners

Other0078843000PA · Bc/bs Keystone, Personal

Other096008PA · Bc/bs Shield Highmark

Other3716959PA · Aetna Us Healthcare Group

Other30023531PA · Keystone Mercy

Other33657PA · Health Partners

Other4100924PA · Aetna Us Healthcare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Alan Erwin Donnenfeld M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6103855739

PECOS Enrollment IDI20050804000425

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Alan Donnenfeld reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Regional Womens Health Group LLC

Same address

Obstetrics & Gynecology

450 CRESSON BLVD STE 300
Phoenixville, PA 19460

Reassigned Medicare billing, Pennsylvania and New Jersey enrollments
Also billed through NPI 1548215536 (New Jersey)
226 clinicians in this Medicare group

NPI 1750880118 (856) 669-6050

Main Line Healthcare

10 mi

Family Medicine

3803 WEST CHESTER PIKE, H BLDG SUITE 160
Newtown Square, PA 19073

Reassigned Medicare billing, Pennsylvania enrollment
1,638 clinicians in this Medicare group

NPI 1922077643 (484) 337-1585

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

REGIONAL WOMENS HEALTH GROUP LLC

Obstetrics & Gynecology

450 CRESSON BLVD STE 300
PHOENIXVILLE, PA 19460

Chester County (856) 669-6050

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alan Donnenfeld's NPI number?

The NPI number for Alan Donnenfeld is 1205894219. It was assigned to this individual provider in the NPPES registry on May 2, 2006.

Where is Alan Donnenfeld located?

Alan Donnenfeld practices at 450 Cresson Blvd Ste 300, Phoenixville, PA 19460. The listed phone number is (484) 831-0200.

What is Alan Donnenfeld's specialty?

The primary specialty registered for this NPI is Medical Genetics, specializing in Clinical Genetics (M.D.), with taxonomy code 207SG0201X.

Is Alan Donnenfeld enrolled in Medicare?

Yes. Alan Donnenfeld is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Alan Donnenfeld's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alan Donnenfeld reassigns Medicare benefits to 2 organizations: Regional Womens Health Group LLC (Phoenixville, PA) and Main Line Healthcare (Newtown Square, PA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Alan Donnenfeld's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alan Donnenfeld accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Buckeye Health Plan and Oscar Health list Alan Donnenfeld as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Alan Donnenfeld was last updated on July 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.