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DR. MARY ELIZABETH DIAMOND D.O.
NPI 1962617837
Psychiatry & Neurology - Child & Adolescent Psychiatry in Paoli, PA

Active since May 13, 2007PECOS EnrolledAccepts Medicare Assignment
41 PAOLI PLZ, SUITE D1, PAOLI, PA 19301(610) 296-9238(610) 296-9239 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Mary Elizabeth Diamond D.o. NPPES

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

DR. MARY ELIZABETH DIAMOND D.O. (NPI 1962617837) is an individual child & adolescent psychiatry provider in Paoli, Pennsylvania, licensed in Pennsylvania (OS008869L) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS and is a graduate of Philadelphia College Of Osteopathic Medicine (1994).

NPPES Registry Identity

NPI1962617837
Entity TypeIndividualFemale
Primary Taxonomy2084P0804X
Provider Legal NameDR. MARY ELIZABETH DIAMONDCredential: D.O.
Location Address41 PAOLI PLZ, SUITE D1Paoli, PA 19301-1367
Mailing Address41 Paoli Plz, Suite D1Paoli, PA 19301-1367 · (610) 296-9238 · Fax (610) 296-9239
Phone(610) 296-9238
Fax(610) 296-9239
Sole ProprietorYes
Medical School CMSPhiladelphia College Of Osteopathic MedicineGraduated 1994
Enumeration DateMay 13, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1962617837 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Child & Adolescent PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0804X
License✔ Licensed in PA · OS008869L
Definition
Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.
41 PAOLI PLZ, Paoli, PA 19301
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include AmeriHealth Caritas Next.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. Mary Elizabeth Diamond D.o. 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 ID2668737701
PECOS Enrollment IDI20180521001313
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

2

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

Greater Philadelphia Health Action Inc.
11 mi
Federally Qualified Health Center (FQHC)
1489 BALTIMORE PIKE, BUILDING 300, SUITE 300, THE MILLS OF VICTORIA
Springfield, PA 19064
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 232 clinicians in this Medicare group
NPI 1467976001 (484) 472-7430
Med Psych Services LLC
24 mi
Psychiatry
5163 W WOODMILL DR STE 13
Wilmington, DE 19808
  • Reassigned Medicare billing, Delaware enrollment
  • 10 clinicians in this Medicare group
NPI 1790284834 (302) 660-7200

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

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 Mary Diamond's NPI number?

The NPI number for Mary Diamond is 1962617837. It was assigned to this individual provider in the NPPES registry on May 13, 2007.

Where is Mary Diamond located?

Mary Diamond practices at 41 Paoli Plz Suite D1, Paoli, PA 19301. The listed phone number is (610) 296-9238.

What is Mary Diamond's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.

Is Mary Diamond enrolled in Medicare?

Yes. Mary Diamond 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 Mary Diamond's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Diamond reassigns Medicare benefits to 2 organizations: Greater Philadelphia Health Action Inc. (Springfield, PA) and Med Psych Services LLC (Wilmington, DE). 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 Mary Diamond's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Diamond accept?

Health plans from AmeriHealth Caritas Next list Mary Diamond 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 Mary Diamond was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.