NPPES file of Aug 9, 2026

Margot O'Donnell, MD

Psychiatry Physician · Bryn Mawr, PA

Margot O'Donnell, MD is a psychiatry physician with a practice address in Bryn Mawr, Pennsylvania, and NPI 1083770507, issued on Dec 29, 2006. Check the license (Pennsylvania MD435321, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083770507
Name
Margot O'Donnell
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License numbers
MD435321 PA
MT188208 PA
Self-reported in NPPES; status is on the state search
Practice location
1062 E Lancaster Ave, Bryn Mawr, PA 19010
Phone
(215) 621-6201
Enumerated
Dec 29, 2006
Record last updated
May 10, 2019 (not updated in 7 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1062 E Lancaster Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Laurie Bass, MSS LSWSocial Worker1417225368
  2. Sara Bressi, PH.D., LSWSocial Worker1548563992
  3. Eric Chesloff, D.C.Chiropractor1316144553
  4. Ronald Coleman, PH.D.Clinical Psychologist1528192770
  5. Edward Dicesare, PH.D.Psychologist1417157579
  6. Elizabeth Fallon, RN., MSN.Psychiatric/Mental Health Registered Nurse1689721458

Verify Margot O'Donnell in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
    Search for license MD435321
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Pennsylvania license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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78% fewer Medicare Part D claims than the average psychiatry physician in 2024

221 Medicare Part D claims for 25 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Margot O'Donnell221
  2. Specialty average1,000

Most prescribed

  1. Escitalopram Oxalate38 claims
  2. Fluoxetine Hcl32 claims
  3. Clonazepam16 claims
  4. Duloxetine Hcl14 claims
  5. Dextroamphetamine-Amphetamine12 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.

Margot O'Donnell among 2,662 psychiatry physician records in Pennsylvania

Margot O'Donnell, MD is one of 2,662 psychiatry physician records with a practice address in Pennsylvania. 72% 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 6% of them.

  • NPI issued2006 · 6% of these records are older, 61% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileNo · 45% of these records are
  • Record last updated2019 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

63 psychiatry physician records list a practice address in Bryn Mawr

They are 63 of the 1,496 NPPES records with a practice address in Bryn Mawr, and 2,662 psychiatry physician records in Pennsylvania.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Angel Angelov, MDBryn Mawr, PA 190101861471757
  2. Stephen Baker, MDBryn Mawr, PA 190101235247180
  3. Marina Cooney, MDBryn Mawr, PA 190101982683207
  4. Stephen Mechanick, M.D.Bryn Mawr, PA 190101538265814
  5. David Nace, M.DBryn Mawr, PA 190101881699742
  6. Suzanne Reiss, M.D.Bryn Mawr, PA 190101851488365
  7. Thomas Riordan, M.D.Rosemont, PA 190101558479329
  8. Howard Rosen, MDBryn Mawr, PA 190101376587840

Common questions

What is Margot O'Donnell, MD's NPI number?

Margot O'Donnell, MD's National Provider Identifier (NPI) is 1083770507, issued on Dec 29, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Margot O'Donnell, MD located?

The NPPES record lists a practice address at 1062 E Lancaster Ave, Bryn Mawr, PA, 19010. Phone: (215) 621-6201. Providers update this record themselves, so call before visiting.

How can I verify Margot O'Donnell, MD's license?

NPPES lists Pennsylvania license number MD435321, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Margot O'Donnell, MD prescribe under Medicare Part D?

In 2024, Margot O'Donnell, MD had 221 Medicare Part D claims for 25 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.