Gary Ross Sirken, DO
Nephrology Physician · Langhorne, PA
Gary Ross Sirken, DO is a nephrology physician with a practice address in Langhorne, Pennsylvania, and NPI 1164469334, issued on May 31, 2006. Check the license (Pennsylvania OS010180L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Gary Ross Sirken
- Credential
- DO
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- OS010180L PA
Self-reported in NPPES; status is on the state search - Practice location
- 825 Town Center Drive, Langhorne, PA 19047
- Phone
- (215) 741-3510
- Enumerated
- May 31, 2006
- Record last updated
- Dec 13, 2024
- Fax
- (215) 741-3519
- Medicaid ID
- 0019054860003 PA
- Medicare enrollment
- Enrolled (PECOS I20040810000565); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 825 Town Center Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kimon Kostopoulos, DONephrology Physician1609813880
- Michael Shulman, MDNephrology Physician1255378428
Verify Gary Ross Sirken in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS010180LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% more Medicare Part D claims than the average nephrology physician in 2024
2,556 Medicare Part D claims for 508 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Allopurinol255 claims
- Amlodipine Besylate184 claims
- Losartan Potassium138 claims
- Furosemide130 claims
- Torsemide124 claims
- Farxiga97 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: $1,138.18
48 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Aria Health Physician ServicesPhiladelphia, PA
- Methodist Associates IN Healthcare, IncPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nephrology Physician providers in Pennsylvania
There are 651 nephrology physician records in Pennsylvania.
Other nephrology physician records in Pennsylvania
- Muhammad Abdulbasit, MD, FACPWilkes Barre, PA1265704225
- Mohamed Anwar Abdus Samad, MDYork, PA1285983684
- Samer Abou Chehade, M.DErie, PA1730744020
- Blaise AbramovitzPittsburgh, PA1093150922
- Parvaneh Abtahi, MDWyomissing, PA1245213099
- Azza AbubakerPhiladelphia, PA1821732298
- Scott Adler, MDPhiladelphia, PA1295986792
- Sandeep Aggarwal, M.D.Philadelphia, PA1548420326
- Gautam Agrawal, M.D , M.P.HGreensburg, PA1063737070
- Ravi Agrawal, M.B.B.SBethlehem, PA1396973178
Common questions
What is Gary Ross Sirken, DO's NPI number?
Gary Ross Sirken, DO's National Provider Identifier (NPI) is 1164469334, issued on May 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary Ross Sirken, DO located?
The NPPES record lists a practice address at 825 Town Center Drive, Langhorne, PA, 19047. Phone: (215) 741-3510. Providers update this record themselves, so call before visiting.
How can I verify Gary Ross Sirken, DO's license?
NPPES lists Pennsylvania license number OS010180L, 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 Gary Ross Sirken, DO prescribe under Medicare Part D?
In 2024, Gary Ross Sirken, DO had 2,556 Medicare Part D claims for 508 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.