Gwendolyn Messer, M.D.
Child & Adolescent Psychiatry Physician · Philadelphia, PA
Gwendolyn Messer, M.D. is a child & adolescent psychiatry physician with a practice address in Philadelphia, Pennsylvania, and NPI 1881724946, issued on Mar 7, 2007. Check the license (Pennsylvania MD465837, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Gwendolyn Messer
- Credential
- M.D.
- Primary taxonomy
- Child & Adolescent Psychiatry Physician 2084P0804X
- License numbers
- MD465837 PA
036096772 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3401 Civic Center Blvd, Philadelphia, PA 19104
- Phone
- (215) 590-7131
- Enumerated
- Mar 7, 2007
- Record last updated
- Feb 18, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20220328000050); accepts Medicare assignment
- Medical or professional school
- Emory University School Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest child & adolescent psychiatry physician records → All 398 in Pennsylvania → Look up another NPI →
Also registered at 3401 Civic Center Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gwendolyn Messer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD465837Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average child & adolescent psychiatry physician in 2024
13 Medicare Part D claims, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 91.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Cmc Psychiatric Associates PCCamden, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gwendolyn Messer among 398 child & adolescent psychiatry physician records in Pennsylvania
Gwendolyn Messer, M.D. is one of 398 child & adolescent psychiatry physician records with a practice address in Pennsylvania. 57% 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 30% of them.
- NPI issued2007 · 30% of these records are older, 47% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileYes · 29% of these records are
- Graduated1992 · median 2000 among the 116 with a school on file
- Record last updated2019 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0804X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Child & Adolescent Psychiatry Physician providers in Pennsylvania
There are 398 child & adolescent psychiatry physician records in Pennsylvania.
All 398 in Pennsylvania → Every provider in Philadelphia → Child & Adolescent Psychiatry Physician nationwide →
The 8 child & adolescent psychiatry physician records with the nearest ZIP codes
- Rossana Avelino, M.D.Philadelphia, PA 191041457464489
- Tami Benton, M.D.Philadelphia, PA 191041023118171
- Karin Borgmann-Winter, M.D.Philadelphia, PA 191041477666378
- Marian Callaghan, M.D.Philadelphia, PA 191041861572083
- Aurora Casta, MDPhiladelphia, PA 191041235169897
- Harriet Gross, M.D.Phila, PA 191041891838637
- Frank James, MD JDPhiladelphia, PA 191041881798437
- Sarosh Khalid-Khan, MDPhiladelphia, PA 191041972533024
Common questions
What is Gwendolyn Messer, M.D.'s NPI number?
Gwendolyn Messer, M.D.'s National Provider Identifier (NPI) is 1881724946, issued on Mar 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gwendolyn Messer, M.D. located?
The NPPES record lists a practice address at 3401 Civic Center Blvd, Philadelphia, PA, 19104. Phone: (215) 590-7131. Providers update this record themselves, so call before visiting.
How can I verify Gwendolyn Messer, M.D.'s license?
NPPES lists Pennsylvania license number MD465837, 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 Gwendolyn Messer, M.D. prescribe under Medicare Part D?
In 2024, Gwendolyn Messer, M.D. had 13 Medicare Part D claims; the average among child & adolescent psychiatry physician prescribers was 504. Part D covers Medicare prescriptions only.
What is Gwendolyn Messer, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.