NPPES file of Aug 9, 2026

Alan Mark Gruenberg, M.D.

Psychiatry Physician · Bryn Mawr, PA

Alan Mark Gruenberg, M.D. is a psychiatry physician with a practice address in Bryn Mawr, Pennsylvania, and NPI 1558409011, issued on Feb 4, 2007. Check the license (Pennsylvania MD 034523-E, 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
1558409011
Name
Alan Mark Gruenberg
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
MD 034523-E PA
Self-reported in NPPES; status is on the state search
Practice location
950 E Haverford RD, Bryn Mawr, PA 19010
Phone
(610) 527-4217
Enumerated
Feb 4, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(610) 527-4628
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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8 nearest psychiatry physician records → All 2,662 in Pennsylvania → Look up another NPI →

Also registered at 950 E Haverford RD

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

  1. Susan Anderer, PSY.D.Clinical Psychologist1245442565
  2. James Bleiberg, PSY. D.Clinical Psychologist1336368323
  3. Madeline BradleyPsychologist1295536100
  4. Heather CoderBehavior Analyst1912633421
  5. James Hetznecker, MDPsychiatry Physician1871636183
  6. Barbara Malamut, PH.DClinical Psychologist1609847805

Verify Alan Mark Gruenberg 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 MD 034523-E    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

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28% fewer Medicare Part D claims than the average psychiatry physician in 2024

718 Medicare Part D claims for 60 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.

  1. Alan Gruenberg718
  2. Specialty average1,000

Most prescribed

  1. Clonazepam85 claims
  2. Lorazepam51 claims
  3. Sertraline Hcl48 claims
  4. Clozapine43 claims
  5. Zolpidem Tartrate42 claims
  6. Venlafaxine Hcl Er41 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.

Industry payments in 2024: $155.15

4 payments; by number, the most common kind was food and beverage; the largest payer was Alkermes, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alan Gruenberg$155.15
  2. Specialty average$4,954.93

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Alan Mark Gruenberg among 2,662 psychiatry physician records in Pennsylvania

Alan Mark Gruenberg, M.D. 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 2007, is newer than 39% of them.

  • NPI issued2007 · 39% of these records are older, 46% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileNo · 45% of these records are
  • Record last updated2007 · 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.

All 2,662 in Pennsylvania → Every provider in Bryn Mawr → Psychiatry Physician nationwide →

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 Alan Mark Gruenberg, M.D.'s NPI number?

Alan Mark Gruenberg, M.D.'s National Provider Identifier (NPI) is 1558409011, issued on Feb 4, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Alan Mark Gruenberg, M.D. located?

The NPPES record lists a practice address at 950 E Haverford RD, Bryn Mawr, PA, 19010. Phone: (610) 527-4217. Providers update this record themselves, so call before visiting.

How can I verify Alan Mark Gruenberg, M.D.'s license?

NPPES lists Pennsylvania license number MD 034523-E, 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 Alan Mark Gruenberg, M.D. prescribe under Medicare Part D?

In 2024, Alan Mark Gruenberg, M.D. had 718 Medicare Part D claims for 60 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.