Dr. Ari Reuben Geselowitz, MD
- Medicare services, 2021
- 2,579
- Hospital affiliations
- 2
- Industry payments
- $14
- Medical groups
- 2
- State license
- 1
- Practice address
- 1800 E Park Ave, State College, PA 16803
- Practice phone
- Call (814) 231-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mount Nittany Medical Center
State College, Pennsylvania
Find Dr. Geselowitz's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ari Reuben Geselowitz is a diagnostic radiologist in State College, Pennsylvania
Dr. Geselowitz practices at Mount Nittany Medical Center in State College, Pennsylvania.
Dr. Geselowitz's NPI, 1326021577, was assigned on November 22, 2005. Dr. Geselowitz graduated from Pennsylvania State University College of Medicine in 1986. Dr. Geselowitz holds Pennsylvania license MD043267L.
- NPI
- 1326021577NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4385699313
- NPI enumeration date
- November 22, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (814) 231-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ari Reuben Geselowitz practices at Mount Nittany Medical Center in State College, Pennsylvania
Dr. Geselowitz's primary practice is Mount Nittany Medical Center, at 1800 E Park Ave, State College, PA 16803 in Centre County. The practice phone is (814) 231-7000.
- Mount Nittany Medical Center1800 E Park Ave, State College, PA 16803 · Centre CountyPhone(814) 231-7000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ari Reuben Geselowitz is affiliated with 4 sites of care and 2 medical groups
Dr. Geselowitz's primary practice is Mount Nittany Medical Center in State College, Pennsylvania. Dr. Geselowitz is also affiliated with Mount Nittany Medical Center. The medical group on file is Mount Nittany Physician Group. Dmand AI also links Dr. Geselowitz to 1 more hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ari Reuben Geselowitz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Geselowitz practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mount Nittany Medical Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ari Reuben Geselowitz is one of 1,655 diagnostic radiologists in Pennsylvania
Diagnostic radiology is Dr. Geselowitz's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Geselowitz is licensed in Pennsylvania.
Specialties and state licenses
- Diagnostic radiology, PennsylvaniaPrimary
Diagnostic radiologists near Dr. Geselowitz
Counts of diagnostic radiologists 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. Ari Reuben Geselowitz billed Medicare for 2,579 services in 2021
CMS data shows 2,579 Medicare services from Dr. Geselowitz across 46 procedure codes in 2021. Medicare paid $65,908 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Geselowitz's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Imaging
- 2020: 3,5552021: 2,48630%
- Tests and treatments
- 2020: 1462021: 9336%
- Other services
- 2020: 212021: 0100%
Dr. Geselowitz compared with the Pennsylvania median for diagnostic radiologists, 2021
- Dr. Geselowitz
- Pennsylvania median
- Medicare services
- 2,579vs 1,95532% above
Medians across 1,606 diagnostic radiologists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Geselowitz's most billed Medicare procedure codes, 2021
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. Geselowitz and other diagnostic radiologists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ari Reuben Geselowitz's patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Geselowitz's median patient age at 67, with 58% women.
Dr. Geselowitz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women58%
- Men41%
Source: Dmand AI Patient Panel Data
How Dr. Ari Reuben Geselowitz takes part in Medicare
Dr. Geselowitz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ari Reuben Geselowitz received $14 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Geselowitz from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Siemens Medical Solutions USA, Inc. paid the most, $14.
Companies that paid Dr. Geselowitz the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ari Reuben Geselowitz graduated from Pennsylvania State University College of Medicine
Dr. Geselowitz graduated from Pennsylvania State University College of Medicine in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ari Reuben Geselowitz'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 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 Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. Ari Reuben Geselowitz
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. Ari Reuben Geselowitz's NPI number?
Dr. Ari Reuben Geselowitz's NPI number is 1326021577. It was assigned on November 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Ari Reuben Geselowitz?
Dr. Ari Reuben Geselowitz is a diagnostic radiologist in State College, Pennsylvania. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Ari Reuben Geselowitz practice?
Dr. Geselowitz practices at 1800 E Park Ave, State College, PA 16803. Dr. Geselowitz's primary practice is Mount Nittany Medical Center in State College, Pennsylvania. Dmand AI also links Dr. Geselowitz to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Dr. Ari Reuben Geselowitz's office phone number?
The practice phone on file for Dr. Geselowitz is (814) 231-7000.
What is Dr. Ari Reuben Geselowitz's medical license number?
Dr. Geselowitz holds Pennsylvania license MD043267L.
Which hospitals is Dr. Ari Reuben Geselowitz affiliated with?
Dr. Geselowitz is affiliated with Mount Nittany Medical Center. Dmand AI links Dr. Geselowitz to 1 more hospital.
What medical group is Dr. Ari Reuben Geselowitz part of?
Dr. Geselowitz is linked to Mount Nittany Physician Group. Dmand AI links Dr. Geselowitz to 1 more medical group.
Does Dr. Ari Reuben Geselowitz accept Medicare?
Yes. CMS data shows Dr. Geselowitz billed Medicare for 2,579 services in 2021, and Dr. Geselowitz accepts Medicare assignment.
What services does Dr. Ari Reuben Geselowitz bill to Medicare?
In 2021, Dr. Geselowitz's most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (70450) and diagnostic imaging (71046).
Where did Dr. Ari Reuben Geselowitz go to medical school?
Dr. Geselowitz graduated from Pennsylvania State University College of Medicine in 1986.
Has Dr. Ari Reuben Geselowitz received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to Dr. Geselowitz from 1 company from 2016 to 2016. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Dr. Ari Reuben Geselowitz been practicing?
Dr. Geselowitz graduated from medical school in 1986, 40 years ago.
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