Dr. Harry Gus Greditzer IV, MD
- Medicare services, 2024
- 630
- Medicare patients, 2024
- 620
- Hospital affiliations
- 2
- Industry payments
- $117
- Medical groups
- 4
- Practice address
- 535 East 70th Street, New York, NY 10021
- Practice phone
- Call (212) 606-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Greditzer'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. Harry Gus Greditzer IV is a diagnostic radiologist in New York, New York
Dr. Greditzer practices at Hospital for Special Surgery in New York, New York, part of Hospital for Special Surgery.
Dr. Greditzer's NPI, 1174753982, was assigned on July 15, 2009. Dr. Greditzer holds Missouri license 2015043933.
- NPI
- 1174753982NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709175052
- NPI enumeration date
- July 15, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (212) 606-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Harry Gus Greditzer IV practices at Hospital for Special Surgery in New York, New York
Dr. Greditzer's primary practice is Hospital for Special Surgery, at 535 East 70th Street, New York, NY 10021 in New York County. The practice phone is (212) 606-1000.
- Hospital for Special Surgery535 East 70th Street, New York, NY 10021 · New York CountyPhone(212) 606-1000
Source: Dmand AI Affiliation Data
Dr. Harry Gus Greditzer IV is affiliated with 4 sites of care and 4 medical groups
Dr. Greditzer's primary practice is Hospital for Special Surgery in New York, New York, part of Hospital for Special Surgery. Dr. Greditzer is also affiliated with Stamford Hospital. The medical group on file is Hospital for Special Surgery. Dmand AI also links Dr. Greditzer to 3 more medical groups and 2 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Harry Gus Greditzer IV's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greditzer practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hospital for Special Surgery | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Hospital for Special Surgery and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Harry Gus Greditzer IV is one of 2,697 diagnostic radiologists in New York
Diagnostic radiology is Dr. Greditzer's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dmand AI has Dr. Greditzer's licenses on file in 2 states: Missouri and Florida.
Specialties and state licenses
- Diagnostic radiology, MissouriPrimary
- Florida license
Diagnostic radiologists near Dr. Greditzer
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. Harry Gus Greditzer IV billed Medicare for 630 services in 2024
CMS data shows 630 Medicare services from Dr. Greditzer across 9 procedure codes in 2024, for 620 Medicare patients. Medicare paid $38,854 for them.
Dr. Greditzer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 6912024: 60413%
- Surgery
- 2023: 612024: 2657%
Where Dr. Greditzer's Medicare services took place, 2024
- In an office33553%
- In a facility29547%
Dr. Greditzer compared with the New York median for diagnostic radiologists, 2024
- Dr. Greditzer
- New York median
- Medicare services
- 630vs 2,41474% below
- Medicare patients
- 620vs 1,15947% below
Medians across 2,610 diagnostic radiologists in New York with Dmand AI profiles that report each measure.
Dr. Greditzer'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.
Need commercial claims for Dr. Greditzer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Greditzer and other diagnostic radiologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Harry Gus Greditzer IV treated 620 Medicare patients in 2024, average age 74
CMS counts 620 Medicare patients who saw Dr. Greditzer in 2024. The largest group is 65 to 74, with 307 patients. 75% of them have arthritis, and 75% have high cholesterol. 6% are also on Medicaid. Their average risk score is 0.96, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Greditzer's median patient age at 44, with 47% women.
Dr. Greditzer's Medicare patients by age, 2024
Dr. Greditzer's Medicare patients by sex, 2024
- Women39063%
- Men23037%
Chronic conditions among Dr. Greditzer's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure67%
- Ischemic heart disease32%
- Anxiety31%
- Osteoporosis30%
- Mood disorders27%
- Diabetes24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Greditzer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 44
Patient panel by sex, all payers
- Women47%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Harry Gus Greditzer IV takes part in Medicare
Dr. Greditzer 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. Harry Gus Greditzer IV received $117 in industry payments from 2016 to 2018
CMS Open Payments shows 3 general payments to Dr. Greditzer from 2 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $101.
General payments to Dr. Greditzer by program year, 2016 to 2018
Companies that paid Dr. Greditzer the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Harry Gus Greditzer IV'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| 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) |
| 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. Harry Gus Greditzer IV
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. Harry Gus Greditzer IV's NPI number?
Dr. Harry Gus Greditzer IV's NPI number is 1174753982. It was assigned on July 15, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Harry Gus Greditzer IV?
Dr. Harry Gus Greditzer IV is a diagnostic radiologist in New York, New York. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Harry Gus Greditzer IV practice?
Dr. Greditzer practices at 535 East 70th Street, New York, NY 10021. Dr. Greditzer's primary practice is Hospital for Special Surgery in New York, New York, part of Hospital for Special Surgery. Dmand AI also links Dr. Greditzer to 3 medical groups and 2 group practices and clinics.
What is Dr. Harry Gus Greditzer IV's office phone number?
The practice phone on file for Dr. Greditzer is (212) 606-1000.
What is Dr. Harry Gus Greditzer IV's medical license number?
Dr. Greditzer holds Missouri license 2015043933, one of the licenses on file in 2 states.
Which states has Dr. Harry Gus Greditzer IV been licensed in?
Dmand AI has state licenses on file for Dr. Greditzer in Missouri and Florida.
Which hospitals is Dr. Harry Gus Greditzer IV affiliated with?
Dr. Greditzer practices at Hospital for Special Surgery in New York, New York. Dr. Greditzer is also affiliated with Stamford Hospital.
What medical group is Dr. Harry Gus Greditzer IV part of?
Dr. Greditzer is linked to Hospital for Special Surgery. Dmand AI links Dr. Greditzer to 3 more medical groups.
Does Dr. Harry Gus Greditzer IV accept Medicare?
Yes. CMS data shows Dr. Greditzer billed Medicare for 630 services in 2024, and Dr. Greditzer accepts Medicare assignment.
How many Medicare patients does Dr. Harry Gus Greditzer IV see?
CMS counts 620 Medicare patients who saw Dr. Greditzer in 2024, with an average age of 74.
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What services does Dr. Harry Gus Greditzer IV bill to Medicare?
In 2024, Dr. Greditzer's most billed Medicare services were diagnostic imaging (72148), diagnostic imaging (73721) and diagnostic imaging (73221).
Has Dr. Harry Gus Greditzer IV received payments from drug or device companies?
CMS Open Payments shows $117 in general payments to Dr. Greditzer from 2 companies from 2016 to 2018. The largest total came from Stryker Corporation.
How long has Dr. Harry Gus Greditzer IV been practicing?
Dr. Greditzer graduated from medical school in 2009, 17 years ago.
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