Isabella Maria Oldenburg, PA
Physician Assistant · Providence, RI
Isabella Maria Oldenburg, PA is a physician assistant with a practice address in Providence, Rhode Island, and NPI 1154882835, issued on Mar 26, 2019. Check the license (Rhode Island PA01442, as entered in NPPES) with the Rhode Island board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Isabella Maria Oldenburg
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA01442 RI
Self-reported in NPPES; status is on the state search - Practice location
- 44 W River St, Providence, RI 02904
- Phone
- (401) 274-4800
- Enumerated
- Mar 26, 2019
- Record last updated
- Oct 15, 2025
- Medicare enrollment
- Enrolled (PECOS I20221012001512); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 683 in Rhode Island → Look up another NPI →
Also registered at 44 W River St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alyn Adrain, M.D.Gastroenterology Physician1225027766
- Evan Cohen, M.D.Gastroenterology Physician1538158068
- Jaclyn Decoursey, PA-CPhysician Assistant1902466188
- Lisa Dowd, RNPAdult Health Nurse Practitioner1437143526
- Valley Dreisbach, M.D.Gastroenterology Physician1629250527
- Jennifer Fallon, FNP-BCFamily Nurse Practitioner1184435810
Verify Isabella Maria Oldenburg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Rhode Island board licenses this profession
Search for license PA01442Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average physician assistant in 2024
424 Medicare Part D claims for 241 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Peg 3350-Electrolyte111 claims
- Omeprazole88 claims
- Pantoprazole Sodium36 claims
- Dicyclomine Hcl24 claims
- Famotidine22 claims
- Linzess19 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: $40.95
1 payment: food and beverage; the largest payer was Madrigal Pharmaceuticals. The 64,719 providers of this specialty with any payment received $841.65 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 2 group practices
- Gastroenterology Associates IncProvidence, RI
- University Gastroenterology, LLCProvidence, RI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Isabella Maria Oldenburg among 683 physician assistant records in Rhode Island
Isabella Maria Oldenburg, PA is one of 683 physician assistant records with a practice address in Rhode Island. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 48% of them.
- NPI issued2019 · 48% of these records are older, 44% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2019 · median 2019 among the 490 with a school on file
- Record last updated2025 · 30% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Rhode Island practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
266 physician assistant records list a practice address in Providence
They are 266 of the 9,647 NPPES records with a practice address in Providence, and 683 physician assistant records in Rhode Island.
All 683 in Rhode Island → Every provider in Providence → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Laureen Berkowitz, PA-CProvidence, RI 029041104110030
- James Cerullo, PA-CNorth Providence, RI 029041982960696
- Graciette Da Silva, PA-CProvidence, RI 029041144221862
- William Durst, P.A.North Providence, RI 029041164481537
- Michelle Gras, PA-CProvidence, RI 029041902220742
- Thomas Hopkins, P.A.North Providence, RI 029041023083029
- Laila Jonsson, PAProvidence, RI 029041750483889
- Amy Lafontaine, P.A.North Providence, RI 029041659346104
Common questions
What is Isabella Maria Oldenburg, PA's NPI number?
Isabella Maria Oldenburg, PA's National Provider Identifier (NPI) is 1154882835, issued on Mar 26, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Isabella Maria Oldenburg, PA located?
The NPPES record lists a practice address at 44 W River St, Providence, RI, 02904. Phone: (401) 274-4800. Providers update this record themselves, so call before visiting.
How can I verify Isabella Maria Oldenburg, PA's license?
NPPES lists Rhode Island license number PA01442, as entered by the provider. Search the Rhode Island board that licenses this profession; the NPPES record confirms identity only.
How much does Isabella Maria Oldenburg, PA prescribe under Medicare Part D?
In 2024, Isabella Maria Oldenburg, PA had 424 Medicare Part D claims for 241 beneficiaries; the average among physician assistant prescribers was 830. 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.