Dr. Ponni V. Perumalswami, MD
- Medicare services, 2020
- 114
- Part D claims, 2024
- 13
- Publications
- 85
- Clinical trials
- 2
- 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. Perumalswami'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. Ponni V. Perumalswami is a gastroenterologist in Ann Arbor, Michigan
Dr. Perumalswami practices at University Hospital in Ann Arbor, Michigan.
Dr. Perumalswami's NPI, 1083818876, was assigned on June 13, 2007. Dr. Perumalswami graduated from Wayne State University School of Medicine in 2002. Dr. Perumalswami holds Michigan license 4301503274.
- NPI
- 1083818876NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9032260203
- NPI enumeration date
- June 13, 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
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ponni V. Perumalswami practices at University Hospital in Ann Arbor, Michigan
Dr. Perumalswami'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. Ponni V. Perumalswami is affiliated with 2 sites of care and 1 medical group
Dr. Perumalswami's primary practice is University Hospital in Ann Arbor, Michigan. Dr. Perumalswami is also affiliated with University Hospital. The medical group on file is University of Michigan Health. Dr. Perumalswami'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. Ponni V. Perumalswami's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Perumalswami 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. Ponni V. Perumalswami is one of 487 gastroenterologists in Michigan
Gastroenterology is Dr. Perumalswami's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Perumalswami is licensed in Michigan.
Specialties and state licenses
- Gastroenterology, MichiganPrimary
Gastroenterologists near Dr. Perumalswami
Counts of gastroenterologists 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. Ponni V. Perumalswami billed Medicare for 114 services in 2020
CMS data shows 114 Medicare services from Dr. Perumalswami across 3 procedure codes in 2020. Medicare paid $7,366 for them.
Dr. Perumalswami's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 1982020: 11442%
Where Dr. Perumalswami's Medicare services took place, 2020
- In an office2925%
- In a facility8575%
Dr. Perumalswami compared with the Michigan median for gastroenterologists, 2020
- Dr. Perumalswami
- Michigan median
- Medicare services
- 114vs 32465% below
- Part D claims
- 287vs 42432% below
Medians across 487 gastroenterologists in Michigan with Dmand AI profiles that report each measure.
Dr. Perumalswami's most billed Medicare procedure codes, 2020
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. Perumalswami and other gastroenterologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ponni V. Perumalswami's patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Dr. Perumalswami's median patient age at 50, with 52% women.
Dr. Perumalswami's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women52%
- Men48%
Source: Dmand AI Patient Panel Data
Dr. Ponni V. Perumalswami wrote 13 Medicare Part D claims in 2024
In 2024, Dr. Perumalswami wrote 13 Medicare Part D claims. 100% of them were for generic drugs. They cover 11 drugs, with $81,943 in total drug cost. In 2019, CMS named 358 claims across 13 drugs.
Dr. Perumalswami's most prescribed drugs by claims, 2020
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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 3582020: 28720%
Drugs named by CMS: 11 in 2020, 13 in 2019.
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. Ponni V. Perumalswami offers telehealth to Medicare patients
Dr. Perumalswami accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Perumalswami as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ponni V. Perumalswami has 85 publications on record
Dmand AI links 85 papers to Dr. Perumalswami, published from 2011 to 2025. 2023 was the busiest year, with 10. The most frequent topics are Hepatitis C, Antiviral Agents and Hepacivirus. Dr. Perumalswami has published most often in Hepatology. Dr. Perumalswami's most frequent co-authors are Thomas D. Schiano, MD, Douglas T. Dieterich, MD and Joseph A. Odin, MD.
Dr. Perumalswami's papers by year, 2016 to 2025
Topics Dr. Perumalswami writes about most
- Hepatitis C
- Antiviral Agents
- Hepacivirus
- Liver Cirrhosis
- Hepatitis C, Chronic
- New York City
- Liver Transplantation
- Mass Screening
Dr. Perumalswami's most frequent co-authors
- Thomas D. Schiano, MD17 shared papers
- Douglas T. Dieterich, MD16 shared papers
- Joseph A. Odin, MD10 shared papers
Recent publications by Dr. Perumalswami
BMC Health Serv Res
See who Dr. Perumalswami researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Perumalswami works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ponni V. Perumalswami has worked on 2 clinical trials
Dmand AI links Dr. Perumalswami to 2 clinical trials. Conditions studied include Hepatitis C, Medication Adherence and Flaviviridae Infections. Icahn School of Medicine at Mount Sinai sponsors the most, 2.
Conditions in Dr. Perumalswami's trials
- Hepatitis C
- Medication Adherence
- Flaviviridae Infections
- Patient Compliance
Investigators on the most trials with Dr. Perumalswami
Recent clinical trials with Dr. Perumalswami
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Ponni V. Perumalswami received $606 in industry payments from 2016 to 2020
CMS Open Payments shows 8 general payments to Dr. Perumalswami from 2 drug and device companies from 2016 to 2020. Education make up the largest share, 58% of the total. Gilead Sciences, Inc. paid the most, $606.
General payments to Dr. Perumalswami by program year, 2016 to 2020
General payments to Dr. Perumalswami by kind, 2016 to 2020
- Education$35058%
- Travel and lodging$15025%
- Food and beverage$10617%
Companies that paid Dr. Perumalswami the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ponni V. Perumalswami graduated from Wayne State University School of Medicine
Dr. Perumalswami graduated from Wayne State University School of Medicine in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ponni V. Perumalswami'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 Data |
| 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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. Ponni V. Perumalswami
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. Ponni V. Perumalswami's NPI number?
Dr. Ponni V. Perumalswami's NPI number is 1083818876. It was assigned on June 13, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ponni V. Perumalswami?
Dr. Ponni V. Perumalswami is a gastroenterologist in Ann Arbor, Michigan. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Ponni V. Perumalswami practice?
Dr. Perumalswami practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. Dr. Perumalswami's primary practice is University Hospital in Ann Arbor, Michigan.
What is Dr. Ponni V. Perumalswami's office phone number?
The practice phone on file for Dr. Perumalswami is (734) 936-4000.
What is Dr. Ponni V. Perumalswami's medical license number?
Dr. Perumalswami holds Michigan license 4301503274.
Which hospitals is Dr. Ponni V. Perumalswami affiliated with?
Dr. Perumalswami is affiliated with University Hospital.
What medical group is Dr. Ponni V. Perumalswami part of?
Dr. Perumalswami is linked to University of Michigan Health.
Does Dr. Ponni V. Perumalswami accept Medicare?
Yes. CMS data shows Dr. Perumalswami billed Medicare for 114 services in 2020, and Dr. Perumalswami accepts Medicare assignment.
Does Dr. Ponni V. Perumalswami offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Perumalswami as offering telehealth services.
What services does Dr. Ponni V. Perumalswami bill to Medicare?
In 2020, Dr. Perumalswami's most billed Medicare services were hospital inpatient care (99231), office visit, established patient (99214) and hospital inpatient care (99222).
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Where did Dr. Ponni V. Perumalswami go to medical school?
Dr. Perumalswami graduated from Wayne State University School of Medicine in 2002.
What drugs does Dr. Ponni V. Perumalswami prescribe most?
In 2020 Medicare Part D data, Dr. Perumalswami's most prescribed drugs by claims were Tacrolimus, Ursodiol and Prednisone.
Has Dr. Ponni V. Perumalswami received payments from drug or device companies?
CMS Open Payments shows $606 in general payments to Dr. Perumalswami from 2 companies from 2016 to 2020. The largest total came from Gilead Sciences, Inc.
How long has Dr. Ponni V. Perumalswami been practicing?
Dr. Perumalswami graduated from medical school in 2002, 24 years ago.
Does Dr. Ponni V. Perumalswami do research?
Dmand AI links 85 publications to Dr. Perumalswami, published from 2011 to 2025. Dr. Perumalswami has worked on 2 clinical trials.
Who does Dr. Ponni V. Perumalswami publish with?
Dr. Perumalswami's most frequent co-authors are Thomas D. Schiano, MD (17 shared papers), Douglas T. Dieterich, MD (16 shared papers) and Joseph A. Odin, MD (10 shared papers).
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