Dr. Ryan Anthony Vasan, MD

  • Boston, MA
  • Ophthalmologist
NPI1548587645PAC ID0345484523
Medicare services, 2024
2,508
Medicare patients, 2024
1,312
Part D claims, 2024
1,016
Publications
7
Hospital affiliations
2
Practice address
55 Fruit Street, Boston, MA 02114
Practice phone
Call (617) 726-2000
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Massachusetts General Hospital

Hospital · Boston, Massachusetts

See all 5 affiliations

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Dr. Ryan Anthony Vasan is an ophthalmologist in Boston, Massachusetts

Dr. Vasan practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.

Dr. Vasan's NPI, 1548587645, was assigned on April 28, 2010. Dr. Vasan holds Massachusetts license 258951.

NPI and contact details
Medicare PAC ID
0345484523
NPI enumeration date
April 28, 2010
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(617) 726-2000
Professional email
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Personal email
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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. Ryan Anthony Vasan practices at Massachusetts General Hospital in Boston, Massachusetts

Dr. Vasan's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.

Source: Dmand AI Affiliation Data

Dr. Ryan Anthony Vasan is affiliated with 4 sites of care and 1 medical group

Dr. Vasan's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Vasan is also affiliated with Massachusetts Eye and Ear. Dmand AI also links Dr. Vasan to 1 more community health center, 1 group practice or clinic and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Vasan

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Ryan Anthony Vasan's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Vasan practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Massachusetts General HospitalAvailable with a free account
+3 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Ryan Anthony Vasan is one of 617 ophthalmologists in Massachusetts

Ophthalmology is Dr. Vasan's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Vasan is licensed in Massachusetts.

Specialties and state licenses

  • Ophthalmology, MassachusettsPrimaryLicense 258951 · taxonomy 207W00000X

Ophthalmologists near Dr. Vasan

Counts of ophthalmologists 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. Ryan Anthony Vasan billed Medicare for 2,508 services in 2024

CMS data shows 2,508 Medicare services from Dr. Vasan across 16 procedure codes in 2024, for 1,312 Medicare patients. Medicare paid $168,646 for them.

Medicare services, 20242,508
Medicare patients1,312
Paid by Medicare$168,646
Procedure codes16

Dr. Vasan's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1,2592024: 1,43314%
Tests and treatments
2023: 9392024: 84110%
Surgery
2023: 1632024: 23444%
Imaging
2023: 112024: 0100%

Where Dr. Vasan's Medicare services took place, 2024

  • In an office2,46698%
  • In a facility422%

Dr. Vasan compared with the Massachusetts median for ophthalmologists, 2024

  • Dr. Vasan
  • Massachusetts median
Medicare services
2,508vs 1,59857% above
Medicare patients
1,312vs 5942.2 times
Part D claims
942vs 54573% above

Medians across 612 ophthalmologists in Massachusetts with Dmand AI profiles that report each measure.

Dr. Vasan'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.

See all procedures by Dr. Vasan

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Ryan Anthony Vasan treated 1,312 Medicare patients in 2024, average age 76

CMS counts 1,312 Medicare patients who saw Dr. Vasan in 2024. The largest group is 75 to 84, with 561 patients. 74% of them have high cholesterol, and 71% have high blood pressure. 14% are also on Medicaid. Their average risk score is 1.07, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Vasan's median patient age at 75, with 61% women.

Medicare patients, 20241,312
Average age76
Average risk score1.07
Also on Medicaid14%

Dr. Vasan's Medicare patients by age, 2024

Dr. Vasan's Medicare patients by sex, 2024

  • Women81562%
  • Men49738%

Chronic conditions among Dr. Vasan's Medicare patients, 2024

  1. High cholesterol74%
  2. High blood pressure71%
  3. Arthritis45%
  4. Anxiety26%
  5. Chronic kidney disease26%
  6. Diabetes25%
  7. Ischemic heart disease24%
  8. Mood disorders22%

Share of Medicare patients with each condition. A patient can have several.

Dr. Vasan's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 75

Patient panel by sex, all payers

  • Women61%
  • Men38%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Ryan Anthony Vasan wrote 1,016 Medicare Part D claims in 2024

In 2024, Dr. Vasan wrote 1,016 Medicare Part D claims for 296 patients. 66% of them were for generic drugs. CMS names the drug for 942 of them, across 16 drugs with 11 or more claims each, at $131,715 in total drug cost. In 2023, CMS named 1,167 claims across 16 drugs.

Part D claims, 20241,016
Drugs named by CMS16
Total drug cost$131,715
Part D patients296

Dr. Vasan's Part D claims by kind of drug, 2024

  • Generic671 claims66%
  • Brand-name345 claims34%

Dr. Vasan'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. Vasan's Part D claims, 2024

  • Antibiotics4%45 of 1,016 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: 1,1672024: 94219%

Drugs named by CMS: 16 in 2024, 16 in 2023.

See all prescribing by Dr. Vasan

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. Ryan Anthony Vasan ranks in the 83rd percentile for cataract surgery in Medicare

Dr. Vasan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 191 procedures of cataract surgery by Dr. Vasan, more than 83% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Where Dr. Vasan ranks in Medicare procedure volume

Cataract surgery
83rd percentile191 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Ryan Anthony Vasan has 7 publications on record

Dmand AI links 7 papers to Dr. Vasan, published from 2019 to 2022. 2022 was the busiest year, with 2. The most frequent topics are Corneal Diseases, Descemet Stripping Endothelial Keratoplasty and Endothelium, Corneal. Dr. Vasan has published most often in Cornea. Dr. Vasan's most frequent co-authors are John Brian Foster, MD, Giannis Aimant Moustafa, MD and Keith Andrew Walter, MD.

Papers7
Years published2019 to 2022

Topics Dr. Vasan writes about most

  • Corneal Diseases
  • Descemet Stripping Endothelial Keratoplasty
  • Endothelium, Corneal
  • Glaucoma
  • Visual Acuity

Dr. Vasan's most frequent co-authors

Recent publications by Dr. Vasan

See all 7 publications and co-authors

See who Dr. Vasan researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Vasan works with, so you can find a warm path to the right ophthalmologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Ryan Anthony Vasan received $3,060 in industry payments from 2016 to 2025

CMS Open Payments shows 48 general payments to Dr. Vasan from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Alcon Laboratories Inc paid the most, $1,897.

General payments to Dr. Vasan by program year, 2016 to 2025

General payments to Dr. Vasan by kind, 2016 to 2025

$3.1Kin total
  • Food and beverage$3,00498%
  • Education$552%

Companies that paid Dr. Vasan the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Vasan

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Dr. Ryan Anthony Vasan's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Ryan Anthony Vasan

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. Ryan Anthony Vasan's NPI number?

Dr. Ryan Anthony Vasan's NPI number is 1548587645. It was assigned on April 28, 2010, and it is active in the NPI Registry.

What kind of doctor is Dr. Ryan Anthony Vasan?

Dr. Ryan Anthony Vasan is an ophthalmologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).

Where does Dr. Ryan Anthony Vasan practice?

Dr. Vasan practices at 55 Fruit Street, Boston, MA 02114. Dr. Vasan's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Vasan to 1 community health center, 1 group practice or clinic and 1 medical group.

What is Dr. Ryan Anthony Vasan's office phone number?

The practice phone on file for Dr. Vasan is (617) 726-2000.

What is Dr. Ryan Anthony Vasan's medical license number?

Dr. Vasan holds Massachusetts license 258951.

Which hospitals is Dr. Ryan Anthony Vasan affiliated with?

Dr. Vasan practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. Vasan is also affiliated with Massachusetts Eye and Ear.

Does Dr. Ryan Anthony Vasan accept Medicare?

Yes. CMS data shows Dr. Vasan billed Medicare for 2,508 services in 2024, and Dr. Vasan accepts Medicare assignment.

How many Medicare patients does Dr. Ryan Anthony Vasan see?

CMS counts 1,312 Medicare patients who saw Dr. Vasan in 2024, with an average age of 76.

What services does Dr. Ryan Anthony Vasan bill to Medicare?

In 2024, Dr. Vasan's most billed Medicare services were office visit, established patient (99213), eye exam or test (92134) and eye exam or test (92133).

What drugs does Dr. Ryan Anthony Vasan prescribe most?

In 2024 Medicare Part D data, Dr. Vasan's most prescribed drugs by claims were Latanoprost, Neomycin-Polymyxin-Dexameth and Prednisolone Acetate.

Show 4 more questionsShow fewer questions

Has Dr. Ryan Anthony Vasan received payments from drug or device companies?

CMS Open Payments shows $3,060 in general payments to Dr. Vasan from 14 companies from 2016 to 2025. The largest total came from Alcon Laboratories Inc.

How long has Dr. Ryan Anthony Vasan been practicing?

Dr. Vasan graduated from medical school in 2009, 17 years ago.

Does Dr. Ryan Anthony Vasan do research?

Dmand AI links 7 publications to Dr. Vasan, published from 2019 to 2022.

Who does Dr. Ryan Anthony Vasan publish with?

Dr. Vasan's most frequent co-authors are John Brian Foster, MD (2 shared papers), Giannis Aimant Moustafa, MD (2 shared papers) and Keith Andrew Walter, MD (2 shared papers).

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