Dr. Hari Nathan, MD
- Medicare services, 2024
- 13
- Medicare patients, 2026
- 19
- Part D claims, 2022
- 14
- Publications
- 117
- Hospital affiliations
- 1
- Practice address
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Practice phone
- Call (734) 936-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University Hospital
School-Based Health Center · Ann Arbor, Michigan
Find Dr. Nathan'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. Hari Nathan is a general surgeon in Ann Arbor, Michigan
Dr. Nathan practices at University Hospital in Ann Arbor, Michigan.
Dr. Nathan's NPI, 1699825802, was assigned on January 11, 2007. Dr. Nathan graduated from Johns Hopkins University School of Medicine in 2004. Dr. Nathan holds Michigan license 4301105115.
- NPI
- 1699825802NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4981797644
- NPI enumeration date
- January 11, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (734) 936-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hari Nathan practices at University Hospital in Ann Arbor, Michigan
Dr. Nathan's primary practice is University Hospital, at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The practice phone is (734) 936-4000.
- University Hospital1500 E Medical Center Dr, Ann Arbor, MI 48109Phone(734) 936-4000
Source: Dmand AI Affiliation Data
Dr. Hari Nathan is affiliated with 2 sites of care and 1 medical group
Dr. Nathan's primary practice is University Hospital in Ann Arbor, Michigan. Dr. Nathan is also affiliated with University Hospital. The medical group on file is University of Michigan Health. Dr. Nathan's employer is on file too: a school & student health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Hari Nathan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nathan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Hospital | 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. Hari Nathan is one of 1,095 general surgeons in Michigan
Surgery is Dr. Nathan's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Nathan's licenses on file in 2 states: Michigan and New York.
Specialties and state licenses
- Surgery, MichiganPrimary
- Surgical oncology, New York
General surgeons near Dr. Nathan
Counts of general surgeons 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. Hari Nathan billed Medicare for 13 services in 2024
CMS data shows 13 Medicare services from Dr. Nathan across 1 procedure code in 2024, all of them office visits, for 19 Medicare patients. Medicare paid $284 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nathan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 372024: 1365%
Dr. Nathan compared with the Michigan median for general surgeons, 2024
- Dr. Nathan
- Michigan median
- Medicare services
- 13vs 12690% below
- Medicare patients
- 19vs 10782% below
- Part D claims
- 14vs 3053% below
Medians across 1,046 general surgeons in Michigan with Dmand AI profiles that report each measure.
Dr. Nathan'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. Nathan and other general surgeons in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hari Nathan treated 19 Medicare patients in 2026, average age 74
CMS counts 19 Medicare patients who saw Dr. Nathan in 2026. 75% of them have high blood pressure, and 74% have high cholesterol. Their average risk score is 2.06, 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. Nathan's median patient age at 65, with 54% women.
Chronic conditions among Dr. Nathan's Medicare patients, 2026
- High blood pressure75%
- High cholesterol74%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nathan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
Dr. Hari Nathan wrote 14 Medicare Part D claims in 2022
In 2022, Dr. Nathan wrote 14 Medicare Part D claims. They cover 1 drug, with $27,998 in total drug cost. In 2021, CMS named 22 claims across 1 drug.
Dr. Nathan's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 222022: 1436%
Drugs named by CMS: 1 in 2022, 1 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Hari Nathan offers telehealth to Medicare patients
Dr. Nathan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nathan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Hari Nathan has 117 publications on record
Dmand AI links 117 papers to Dr. Nathan, published from 2010 to 2025. 2023 was the busiest year, with 12. The most frequent topics are Medicare, Hospitals and Health Expenditures. Dr. Nathan has published most often in Ann Surg. Dr. Nathan's most frequent co-authors are Justin Brigham Dimick, MD, Andrew M. Ibrahim, MD and Clifford Suhyun Cho, MD.
Dr. Nathan's papers by year, 2016 to 2025
Topics Dr. Nathan writes about most
- Medicare
- Hospitals
- Health Expenditures
- Postoperative Complications
- Pancreatic Neoplasms
- Liver Neoplasms
- Surgical Procedures, Operative
- Colectomy
Dr. Nathan's most frequent co-authors
- Justin Brigham Dimick, MD21 shared papers
- Andrew M. Ibrahim, MD12 shared papers
- Clifford Suhyun Cho, MD9 shared papers
Recent publications by Dr. Nathan
See who Dr. Nathan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Nathan works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Hari Nathan received $183 in industry payments from 2017 to 2018
CMS Open Payments shows 2 general payments to Dr. Nathan from 2 drug and device companies from 2017 to 2018. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $142.
General payments to Dr. Nathan by program year, 2017 to 2018
Companies that paid Dr. Nathan the most, 2017 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Hari Nathan graduated from Johns Hopkins University School of Medicine
Dr. Nathan graduated from Johns Hopkins University School of Medicine in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Hari Nathan'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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Hari Nathan
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. Hari Nathan's NPI number?
Dr. Hari Nathan's NPI number is 1699825802. It was assigned on January 11, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Hari Nathan?
Dr. Hari Nathan is a general surgeon in Ann Arbor, Michigan. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Hari Nathan practice?
Dr. Nathan practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. Dr. Nathan's primary practice is University Hospital in Ann Arbor, Michigan.
What is Dr. Hari Nathan's office phone number?
The practice phone on file for Dr. Nathan is (734) 936-4000. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Hari Nathan's email address?
Dmand AI checks professional and personal email addresses for Dr. Nathan through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Hari Nathan's medical license number?
Dr. Nathan holds Michigan license 4301105115, one of the licenses on file in 2 states.
Which states has Dr. Hari Nathan been licensed in?
Dmand AI has state licenses on file for Dr. Nathan in Michigan and New York.
Which hospitals is Dr. Hari Nathan affiliated with?
Dr. Nathan is affiliated with University Hospital.
What medical group is Dr. Hari Nathan part of?
Dr. Nathan is linked to University of Michigan Health.
Who employs Dr. Hari Nathan?
Dmand AI has Dr. Nathan's employer on file: a school & student health. The organization's name is available with a free Dmand AI account.
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Who does Dr. Hari Nathan practice with?
Dmand AI links 4,006 HCPs to Dr. Nathan's primary medical group, 63 of them general surgeons. A free account lists them, with verified contacts.
Does Dr. Hari Nathan accept Medicare?
Yes. CMS data shows Dr. Nathan billed Medicare for 13 services in 2024, and Dr. Nathan accepts Medicare assignment.
Does Dr. Hari Nathan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Nathan as offering telehealth services.
How many Medicare patients does Dr. Hari Nathan see?
CMS counts 19 Medicare patients who saw Dr. Nathan in 2026, with an average age of 74.
What services does Dr. Hari Nathan bill to Medicare?
In 2024, Dr. Nathan's most billed Medicare services were office visit, established patient (99212).
Where did Dr. Hari Nathan go to medical school?
Dr. Nathan graduated from Johns Hopkins University School of Medicine in 2004.
What drugs does Dr. Hari Nathan prescribe most?
In 2022 Medicare Part D data, Dr. Nathan's most prescribed drugs by claims were Creon.
Has Dr. Hari Nathan received payments from drug or device companies?
CMS Open Payments shows $183 in general payments to Dr. Nathan from 2 companies from 2017 to 2018. The largest total came from Stryker Corporation.
How long has Dr. Hari Nathan been practicing?
Dr. Nathan graduated from medical school in 2004, 22 years ago.
Does Dr. Hari Nathan do research?
Dmand AI links 117 publications to Dr. Nathan, published from 2010 to 2025.
Who does Dr. Hari Nathan publish with?
Dr. Nathan's most frequent co-authors are Justin Brigham Dimick, MD (21 shared papers), Andrew M. Ibrahim, MD (12 shared papers) and Clifford Suhyun Cho, MD (9 shared papers).
What EHR does Dr. Hari Nathan's practice use?
Dmand AI tracks the EHR system at University Hospital and at 1 more affiliated site. The vendor and product are available with a free Dmand AI account.
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