Dr. John Gian, MD
- Medicare services, 2024
- 21
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 1,262
- Publications
- 6
- Hospital affiliations
- 1
- Practice address
- 50 Water St, New York, NY 10004
- Practice phone
- Call (718) 260-7682
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cumberland Diagnostic & Treatment Center
New York, New York
Find Dr. Gian'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. John Gian is an internist in New York, New York
Dr. Gian practices at Cumberland Diagnostic & Treatment Center in New York, New York.
Dr. Gian's NPI, 1316931520, was assigned on September 2, 2005. Dr. Gian graduated from New York Medical College in 1998. Dr. Gian holds New York license 223263-1.
- NPI
- 1316931520NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557356672
- NPI enumeration date
- September 2, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (718) 260-7682
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Gian practices at Cumberland Diagnostic & Treatment Center in New York, New York
Dr. Gian's primary practice is Cumberland Diagnostic & Treatment Center, at 50 Water St, New York, NY 10004 in New York County. The practice phone is (718) 260-7682.
- Cumberland Diagnostic & Treatment Center50 Water St, New York, NY 10004 · New York CountyPhone(718) 260-7682
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Gian is affiliated with 2 sites of care and 1 medical group
Dr. Gian's primary practice is Cumberland Diagnostic & Treatment Center in New York, New York. Dr. Gian is also affiliated with NYC Health + Hospitals/Woodhull. The medical group on file is NYC Health + Hospitals.
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. John Gian's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gian practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cumberland Diagnostic & Treatment Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Gian is one of 9,643 internists in New York
Internal medicine is Dr. Gian's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gian is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Gian
Counts of internists 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. John Gian billed Medicare for 21 services in 2024
CMS data shows 21 Medicare services from Dr. Gian across 1 procedure code in 2024, for 11 Medicare patients. Medicare paid $182 for them. Every service was in an office.
Dr. Gian's Medicare services by type, 2018 to 2024
- 2018
- 2024
- Surgery
- 2018: 02024: 21
- Office and hospital visits
- 2018: 7512024: 0100%
Dr. Gian compared with the New York median for internists, 2024
- Dr. Gian
- New York median
- Medicare services
- 21vs 42695% below
- Medicare patients
- 11vs 15893% below
- Part D claims
- 954vs 62253% above
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Gian'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. Gian?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gian and other internists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Gian treated 11 Medicare patients in 2024, average age 59
CMS counts 11 Medicare patients who saw Dr. Gian in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 0.86, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gian's median patient age at 54, with 63% women.
Dr. Gian's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Gian's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Gian wrote 1,262 Medicare Part D claims in 2024
In 2024, Dr. Gian wrote 1,262 Medicare Part D claims for 71 patients. 82% of them were for generic drugs. CMS names the drug for 954 of them, across 30 drugs with 11 or more claims each, at $80,163 in total drug cost. In 2023, CMS named 849 claims across 28 drugs.
Dr. Gian's Part D claims by kind of drug, 2024
- Generic1,033 claims82%
- Brand-name160 claims13%
- Other69 claims5%
Dr. Gian'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. Gian's Part D claims, 2024
- Antibiotics1%18 of 1,262 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: 8492024: 95412%
Drugs named by CMS: 30 in 2024, 28 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
How Dr. John Gian takes part in Medicare
Dr. Gian 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. John Gian has 6 publications on record
Dmand AI links 6 papers to Dr. Gian, published from 2016 to 2017. 2016 was the busiest year, with 4. The most frequent topics are Diagnosis, Differential. Dr. Gian has published most often in Heart Lung. Dr. Gian's most frequent co-authors are Burke A. Cunha, MD and Bertamaria Dieguez, MD.
Topics Dr. Gian writes about most
- Diagnosis, Differential
Dr. Gian's most frequent co-authors
Recent publications by Dr. Gian
See who Dr. Gian researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gian works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John Gian received $148 in industry payments from 2016 to 2017
CMS Open Payments shows 3 general payments to Dr. Gian from 3 drug and device companies from 2016 to 2017. Education make up the largest share, 67% of the total. Astellas Pharma US Inc paid the most, $100.
General payments to Dr. Gian by program year, 2016 to 2017
General payments to Dr. Gian by kind, 2016 to 2017
- Education$10067%
- Food and beverage$4833%
Companies that paid Dr. Gian the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Gian graduated from New York Medical College
Dr. Gian graduated from New York Medical College in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Gian'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. John Gian
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. John Gian's NPI number?
Dr. John Gian's NPI number is 1316931520. It was assigned on September 2, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John Gian?
Dr. John Gian is an internist in New York, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John Gian practice?
Dr. Gian practices at 50 Water St, New York, NY 10004. Dr. Gian's primary practice is Cumberland Diagnostic & Treatment Center in New York, New York.
What is Dr. John Gian's office phone number?
The practice phone on file for Dr. Gian is (718) 260-7682.
What is Dr. John Gian's medical license number?
Dr. Gian holds New York license 223263-1.
Which hospitals is Dr. John Gian affiliated with?
Dr. Gian is affiliated with NYC Health + Hospitals/Woodhull.
What medical group is Dr. John Gian part of?
Dr. Gian is linked to NYC Health + Hospitals.
Does Dr. John Gian accept Medicare?
Yes. CMS data shows Dr. Gian billed Medicare for 21 services in 2024, and Dr. Gian accepts Medicare assignment.
How many Medicare patients does Dr. John Gian see?
CMS counts 11 Medicare patients who saw Dr. Gian in 2024, with an average age of 59.
What services does Dr. John Gian bill to Medicare?
In 2024, Dr. Gian's most billed Medicare services were surgery: heart and blood vessels (36415).
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Where did Dr. John Gian go to medical school?
Dr. Gian graduated from New York Medical College in 1998.
What drugs does Dr. John Gian prescribe most?
In 2024 Medicare Part D data, Dr. Gian's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Metformin HCl.
Has Dr. John Gian received payments from drug or device companies?
CMS Open Payments shows $148 in general payments to Dr. Gian from 3 companies from 2016 to 2017. The largest total came from Astellas Pharma US Inc.
How long has Dr. John Gian been practicing?
Dr. Gian graduated from medical school in 1998, 28 years ago.
Does Dr. John Gian do research?
Dmand AI links 6 publications to Dr. Gian, published from 2016 to 2017.
Who does Dr. John Gian publish with?
Dr. Gian's most frequent co-authors are Burke A. Cunha, MD (6 shared papers) and Bertamaria Dieguez, MD (1 shared paper).
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