Dr. Gary Ross Sirken, DO
- Medicare services, 2024
- 2,987
- Medicare patients, 2024
- 603
- Part D claims, 2024
- 2,556
- MIPS score, 2024
- 92
- Hospital affiliations
- 3
- Practice address
- 833 Chestnut St, Philadelphia, PA 19107
- Practice phone
- Call (215) 955-1925
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Methodist Associates in Healthcare, Inc.
Philadelphia, Pennsylvania
Find Dr. Sirken's professional email, personal email and mobile number
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Dr. Gary Ross Sirken is a nephrologist in Philadelphia, Pennsylvania
Dr. Sirken practices at Methodist Associates in Healthcare, Inc. in Philadelphia, Pennsylvania.
Dr. Sirken's NPI, 1164469334, was assigned on May 31, 2006. Dr. Sirken graduated from Philadelphia College of Osteopathic Medicine in 1997. Dr. Sirken holds Pennsylvania license OS010180L.
- NPI
- 1164469334NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799757837
- NPI enumeration date
- May 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (215) 955-1925
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gary Ross Sirken practices at Methodist Associates in Healthcare, Inc. in Philadelphia, Pennsylvania
Dr. Sirken's primary practice is Methodist Associates in Healthcare, Inc., at 833 Chestnut St, Philadelphia, PA 19107 in Philadelphia County. The practice phone is (215) 955-1925.
- Methodist Associates in Healthcare, Inc.833 Chestnut St, Philadelphia, PA 19107 · Philadelphia CountyPhone(215) 955-1925
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gary Ross Sirken is affiliated with 10 sites of care and 6 medical groups
Dr. Sirken's primary practice is Methodist Associates in Healthcare, Inc. in Philadelphia, Pennsylvania. Dr. Sirken is also affiliated with Hospital of the University of Pennsylvania. The medical group on file is Jefferson University Physicians. Dmand AI also links Dr. Sirken to 2 more hospitals, 6 group practices and clinics and 5 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gary Ross Sirken's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sirken practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Methodist Associates in Healthcare, Inc. | Available with a free account |
| +9 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gary Ross Sirken is one of 552 nephrologists in Pennsylvania
Nephrology is Dr. Sirken's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Sirken is licensed in Pennsylvania.
Specialties and state licenses
- Nephrology, PennsylvaniaPrimary
Nephrologists near Dr. Sirken
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gary Ross Sirken billed Medicare for 2,987 services in 2024
CMS data shows 2,987 Medicare services from Dr. Sirken across 15 procedure codes in 2024, for 603 Medicare patients. Medicare paid $262,921 for them.
Dr. Sirken's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,3332024: 1,86140%
- Tests and treatments
- 2023: 2292024: 769236%
- Other services
- 2023: 02024: 357
Where Dr. Sirken's Medicare services took place, 2024
- In an office1,84862%
- In a facility1,13938%
Dr. Sirken compared with the Pennsylvania median for nephrologists, 2024
- Dr. Sirken
- Pennsylvania median
- Medicare services
- 2,987vs 7723.9 times
- Medicare patients
- 603vs 2752.2 times
- Part D claims
- 2,210vs 5524.0 times
Medians across 548 nephrologists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Sirken's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sirken and other nephrologists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gary Ross Sirken treated 603 Medicare patients in 2024, average age 73
CMS counts 603 Medicare patients who saw Dr. Sirken in 2024. The largest group is 75 to 84, with 232 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 24% are also on Medicaid. Their average risk score is 3.85, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Sirken's median patient age at 64, with 47% women.
Dr. Sirken's Medicare patients by age, 2024
Dr. Sirken's Medicare patients by sex, 2024
- Women24741%
- Men35659%
Chronic conditions among Dr. Sirken's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes64%
- Ischemic heart disease62%
- Heart failure52%
- Arthritis50%
- Atrial fibrillation38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sirken's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women47%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gary Ross Sirken wrote 2,556 Medicare Part D claims in 2024
In 2024, Dr. Sirken wrote 2,556 Medicare Part D claims for 508 patients. 86% of them were for generic drugs. CMS names the drug for 2,210 of them, across 51 drugs with 11 or more claims each, at $935,460 in total drug cost. In 2023, CMS named 1,500 claims across 36 drugs.
Dr. Sirken's Part D claims by kind of drug, 2024
- Generic2,199 claims86%
- Brand-name and other357 claims14%
Dr. Sirken's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Sirken's Part D claims, 2024
- Antibiotics2%43 of 2,556 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,5002024: 2,21047%
Drugs named by CMS: 51 in 2024, 36 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Gary Ross Sirken scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Sirken for performance year 2024, reported as part of a group. Dr. Sirken accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Sirken as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Sirken's MIPS scores, performance year 2024
- 92of 100Final score
- 74.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Gary Ross Sirken received $4,646 in industry payments from 2016 to 2025
CMS Open Payments shows 221 general payments to Dr. Sirken from 31 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,034.
General payments to Dr. Sirken by program year, 2016 to 2025
General payments to Dr. Sirken by kind, 2016 to 2025
- Food and beverage$4,24491%
- Education$4029%
Companies that paid Dr. Sirken the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gary Ross Sirken graduated from Philadelphia College of Osteopathic Medicine
Dr. Sirken graduated from Philadelphia College of Osteopathic Medicine in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gary Ross Sirken's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gary Ross Sirken
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gary Ross Sirken's NPI number?
Dr. Gary Ross Sirken's NPI number is 1164469334. It was assigned on May 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gary Ross Sirken?
Dr. Gary Ross Sirken is a nephrologist in Philadelphia, Pennsylvania. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Gary Ross Sirken practice?
Dr. Sirken practices at 833 Chestnut St, Philadelphia, PA 19107. Dr. Sirken's primary practice is Methodist Associates in Healthcare, Inc. in Philadelphia, Pennsylvania. Dmand AI also links Dr. Sirken to 2 hospitals, 6 group practices and clinics and 5 medical groups.
What is Dr. Gary Ross Sirken's office phone number?
The practice phone on file for Dr. Sirken is (215) 955-1925.
What is Dr. Gary Ross Sirken's medical license number?
Dr. Sirken holds Pennsylvania license OS010180L.
Which hospitals is Dr. Gary Ross Sirken affiliated with?
Dr. Sirken is affiliated with Hospital of the University of Pennsylvania. Dmand AI links Dr. Sirken to 2 more hospitals.
What medical group is Dr. Gary Ross Sirken part of?
Dr. Sirken is linked to Jefferson University Physicians. Dmand AI links Dr. Sirken to 5 more medical groups.
Does Dr. Gary Ross Sirken accept Medicare?
Yes. CMS data shows Dr. Sirken billed Medicare for 2,987 services in 2024, and Dr. Sirken accepts Medicare assignment.
Does Dr. Gary Ross Sirken offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Sirken as offering telehealth services.
What is Dr. Gary Ross Sirken's MIPS score?
Dr. Sirken's MIPS final score for performance year 2024 is 92 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Gary Ross Sirken see?
CMS counts 603 Medicare patients who saw Dr. Sirken in 2024, with an average age of 73.
What services does Dr. Gary Ross Sirken bill to Medicare?
In 2024, Dr. Sirken's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99214) and medicare service (G2211).
Where did Dr. Gary Ross Sirken go to medical school?
Dr. Sirken graduated from Philadelphia College of Osteopathic Medicine in 1997.
What drugs does Dr. Gary Ross Sirken prescribe most?
In 2024 Medicare Part D data, Dr. Sirken's most prescribed drugs by claims were Allopurinol, Amlodipine Besylate and Losartan Potassium.
Has Dr. Gary Ross Sirken received payments from drug or device companies?
CMS Open Payments shows $4,646 in general payments to Dr. Sirken from 31 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Gary Ross Sirken been practicing?
Dr. Sirken graduated from medical school in 1997, 29 years ago.
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