NPPES file of Aug 9, 2026

Adam Louis Peyton, DO

Gastroenterology Physician · Allentown, PA

Adam Louis Peyton, DO is a gastroenterology physician with a practice address in Allentown, Pennsylvania, and NPI 1558565598, issued on Jun 13, 2007. Check the license (Pennsylvania OS012553, 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
1558565598
Name
Adam Louis Peyton
Credential
DO
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
OS012553 PA
Self-reported in NPPES; status is on the state search
Practice location
1501 N Cedar Crest Blvd, Allentown, PA 18104
Phone
(610) 821-2828
Enumerated
Jun 13, 2007
Record last updated
May 26, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(610) 821-7915
Medicare enrollment
Enrolled (PECOS I20150610000989); accepts Medicare assignment
Medical or professional school
Philadelphia College Of Osteopathic Medicine, 2002
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1501 N Cedar Crest Blvd

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

  1. Anthony Auteri, MDGastroenterology Physician1689678500
  2. Paola Blanco, M.D.Gastroenterology Physician1194759852
  3. Ronald Bross, MDGastroenterology Physician1386648202
  4. James Cornell, MDGastroenterology Physician1285637488
  5. Carl Dangelo, M.D.Gastroenterology Physician1346246295
  6. Patricia Furey, LCSWClinical Social Worker1821291170

Verify Adam Louis Peyton 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 OS012553
    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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97% more Medicare Part D claims than the average gastroenterology physician in 2024

1,596 Medicare Part D claims for 286 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.

  1. Adam Peyton1,596
  2. Specialty average811

Most prescribed

  1. Ursodiol202 claims
  2. Azathioprine124 claims
  3. Furosemide115 claims
  4. Xifaxan112 claims
  5. Spironolactone105 claims
  6. Lactulose83 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: $128,993.23

131 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Adam Peyton$128,993
  2. Specialty average$5,016

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

Bills Medicare through one group practice

  1. Lehigh Valley Physician GroupAllentown, PA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Adam Louis Peyton among 1,049 gastroenterology physician records in Pennsylvania

Adam Louis Peyton, DO is one of 1,049 gastroenterology physician records with a practice address in Pennsylvania. 85% 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 53% of them.

  • NPI issued2007 · 53% of these records are older, 38% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 73% of these records are
  • Graduated2002 · median 2003 among the 769 with a school on file
  • Record last updated2021 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Pennsylvania

There are 1,049 gastroenterology physician records in Pennsylvania.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Anthony Auteri, MDAllentown, PA 181041689678500
  2. Lawrence Bardawil, MDAllentown, PA 181041306848411
  3. Charles Brooks, MDAllentown, PA 181041750373155
  4. Ronald Bross, MDAllentown, PA 181041386648202
  5. James Cornell, MDAllentown, PA 181041285637488
  6. Carl Dangelo, M.D.Allentown, PA 181041346246295
  7. Kyle Helwig, MDAllentown, PA 181041023012945
  8. Tanveer Imam, MDAllentown, PA 181041942209697

Common questions

What is Adam Louis Peyton, DO's NPI number?

Adam Louis Peyton, DO's National Provider Identifier (NPI) is 1558565598, issued on Jun 13, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Adam Louis Peyton, DO located?

The NPPES record lists a practice address at 1501 N Cedar Crest Blvd, Allentown, PA, 18104. Phone: (610) 821-2828. Providers update this record themselves, so call before visiting.

How can I verify Adam Louis Peyton, DO's license?

NPPES lists Pennsylvania license number OS012553, 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 Adam Louis Peyton, DO prescribe under Medicare Part D?

In 2024, Adam Louis Peyton, DO had 1,596 Medicare Part D claims for 286 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.