Marie O'Brien, D.O.
Rheumatology Physician · Allentown, PA
Marie O'Brien, D.O. is a rheumatology physician with a practice address in Allentown, Pennsylvania, and NPI 1083836464, issued on May 3, 2007. Check the license (Pennsylvania OS012497, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Marie O'Brien
- Credential
- D.O.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- OS012497 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3080 Hamilton Blvd, Allentown, PA 18103
- Phone
- (610) 776-5038
- Enumerated
- May 3, 2007
- Record last updated
- Nov 18, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070713000215); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 413 in Pennsylvania → Look up another NPI →
Also registered at 3080 Hamilton Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Baylor, MDFamily Medicine Physician1861421760
- Cheryl Bloomfield, MDInternal Medicine Physician1083622872
- Carolyn Casey, D.O.Rheumatology Physician1205129228
- Brian Costello, D.O.Internal Medicine Physician1437352911
- Thomas Doherty, MDInternal Medicine Physician1992744965
- Eric Gertner, MDInternal Medicine Physician1427088848
Verify Marie O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS012497Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average rheumatology physician in 2024
2,565 Medicare Part D claims for 444 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Hydroxychloroquine Sulfate472 claims
- Methotrexate259 claims
- Gabapentin239 claims
- Prednisone224 claims
- Allopurinol121 claims
- Meloxicam109 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: $369.68
4 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Lehigh Valley Physician GroupAllentown, PA
- Phoenix Rehabilitation And Health Services IncCranberry Twp, PA
- Valley Health Partners Community Health CenterAllentown, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marie O'Brien among 413 rheumatology physician records in Pennsylvania
Marie O'Brien, D.O. is one of 413 rheumatology physician records with a practice address in Pennsylvania. 80% 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 47% of them.
- NPI issued2007 · 47% of these records are older, 42% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2002 · median 2004 among the 275 with a school on file
- Record last updated2015 · 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 207RR0500X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Pennsylvania
There are 413 rheumatology physician records in Pennsylvania.
All 413 in Pennsylvania → Every provider in Allentown → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Shantanu Bishwal, MDAllentown, PA 181031942400759
- Sylvan Brown, MDAllentown, PA 181031992787170
- Carolyn Casey, D.O.Allentown, PA 181031205129228
- Kristin Ingraham, DOAllentown, PA 181031285757534
- William Iobst, MDAllentown, PA 181031568491116
- Susan Kim, MDAllentown, PA 181031578720983
- Kerry Miller, MDAllentown, PA 181031639100589
- James Ross, MDAllentown, PA 181031588697403
Common questions
What is Marie O'Brien, D.O.'s NPI number?
Marie O'Brien, D.O.'s National Provider Identifier (NPI) is 1083836464, issued on May 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marie O'Brien, D.O. located?
The NPPES record lists a practice address at 3080 Hamilton Blvd, Allentown, PA, 18103. Phone: (610) 776-5038. Providers update this record themselves, so call before visiting.
How can I verify Marie O'Brien, D.O.'s license?
NPPES lists Pennsylvania license number OS012497, 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 Marie O'Brien, D.O. prescribe under Medicare Part D?
In 2024, Marie O'Brien, D.O. had 2,565 Medicare Part D claims for 444 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.