Mary Clare Pirro Parrott, D.O.
Hospitalist Physician · Philadelphia, PA
Mary Clare Pirro Parrott, D.O. is a hospitalist physician with a practice address in Philadelphia, Pennsylvania, and NPI 1871934950, issued on Jul 17, 2013. Check the license (Pennsylvania OS018099, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Mary Clare Pirro Parrott
- Credential
- D.O.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- OS018099 PA
Self-reported in NPPES; status is on the state search - Practice location
- 10800 Knights RD, Philadelphia, PA 19114
- Phone
- (267) 587-9676
- Enumerated
- Jul 17, 2013
- Record last updated
- Mar 27, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (215) 612-2658
- Medicare enrollment
- Enrolled (PECOS I20170119000035); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2013
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 1,424 in Pennsylvania → Look up another NPI →
Also registered at 10800 Knights RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ibrahim Abaherah, DOStudent in an Organized Health Care Education/Training Program1942004189
- Vincent Abiona, MD, MPHStudent in an Organized Health Care Education/Training Program1245966126
- Frederick Allen, MDAnesthesiology Physician1033279617
- Nathan Alspaugh, DOStudent in an Organized Health Care Education/Training Program1881443976
- Kimberly Angelina, PA-CMedical Physician Assistant1497222871
- Fatima Athar, MDStudent in an Organized Health Care Education/Training Program1952229445
Verify Mary Clare Pirro Parrott in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS018099Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average hospitalist physician in 2024
59 Medicare Part D claims for 34 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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: $613.55
17 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 7,324 providers of this specialty with any payment received $494.84 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 one group practice
- Aria Health Physician ServicesPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Clare Pirro Parrott among 1,424 hospitalist physician records in Pennsylvania
Mary Clare Pirro Parrott, D.O. is one of 1,424 hospitalist physician records with a practice address in Pennsylvania. 94% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 47% of them.
- NPI issued2013 · 47% of these records are older, 48% newer
- In a Medicare fileYes · 94% of these records are
- In the CMS Doctors and Clinicians fileYes · 87% of these records are
- Graduated2013 · median 2011 among the 1,236 with a school on file
- Record last updated2017 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Pennsylvania
There are 1,424 hospitalist physician records in Pennsylvania.
All 1,424 in Pennsylvania → Every provider in Philadelphia → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Masood Ahmed, M.D.Philadelphia, PA 191141063731354
- Mariah ChambersPhiladelphia, PA 191141093178790
- Ashleigh FrankPhiladelphia, PA 191141679954697
- Feba George, M.DPhiladelphia, PA 191141528452893
- Kevon HatamianPhiladelphia, PA 191141841725777
- Tina Joseph, D.O.Philadelphia, PA 191141689022568
- Kuljit Kaur, D.O.Philadelphia, PA 191141336597772
- Angela Lee-Kilpatrick, D.O.Philadelphia, PA 191141639583289
Common questions
What is Mary Clare Pirro Parrott, D.O.'s NPI number?
Mary Clare Pirro Parrott, D.O.'s National Provider Identifier (NPI) is 1871934950, issued on Jul 17, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mary Clare Pirro Parrott, D.O. located?
The NPPES record lists a practice address at 10800 Knights RD, Philadelphia, PA, 19114. Phone: (267) 587-9676. Providers update this record themselves, so call before visiting.
How can I verify Mary Clare Pirro Parrott, D.O.'s license?
NPPES lists Pennsylvania license number OS018099, 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 Mary Clare Pirro Parrott, D.O. prescribe under Medicare Part D?
In 2024, Mary Clare Pirro Parrott, D.O. had 59 Medicare Part D claims for 34 beneficiaries; the average among hospitalist physician prescribers was 521. 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.