Dr. William A. Gilmartin, MD
- Medicare services, 2024
- 1,839
- Medicare patients, 2024
- 503
- Part D claims, 2024
- 4,789
- Hospital affiliations
- 1
- Industry payments
- $2,807
- Practice address
- 325 Meeting House Ln, Southampton, NY 11968
- Practice phone
- Call (631) 283-2430
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Meeting House Lane Medical Practice
Southampton, New York
Find Dr. Gilmartin'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. William A. Gilmartin is an internist in Southampton, New York
Dr. Gilmartin practices at Meeting House Lane Medical Practice in Southampton, New York.
Dr. Gilmartin's NPI, 1457454670, was assigned on September 6, 2006. Dr. Gilmartin graduated from Georgetown University School Of Medicine in 1993. Dr. Gilmartin holds New York license 227116.
- NPI
- 1457454670NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305758442
- NPI enumeration date
- September 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (631) 283-2430
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William A. Gilmartin practices at Meeting House Lane Medical Practice in Southampton, New York
Dr. Gilmartin's primary practice is Meeting House Lane Medical Practice, at 325 Meeting House Ln, Southampton, NY 11968 in Suffolk County. The practice phone is (631) 283-2430.
- Meeting House Lane Medical Practice325 Meeting House Ln, Southampton, NY 11968 · Suffolk CountyPhone(631) 283-2430
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William A. Gilmartin is affiliated with 6 sites of care and 2 medical groups
Dr. Gilmartin's primary practice is Meeting House Lane Medical Practice in Southampton, New York. Dr. Gilmartin is also affiliated with Stony Brook University Hospital. The medical group on file is Meeting House Lane Medical Practice. Dmand AI also links Dr. Gilmartin to 2 more group practices and clinics, 2 home health agencies and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William A. Gilmartin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gilmartin practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Meeting House Lane Medical Practice | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William A. Gilmartin is one of 9,643 internists in New York
Internal medicine is Dr. Gilmartin's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gilmartin is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Gilmartin
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. William A. Gilmartin billed Medicare for 1,839 services in 2024
CMS data shows 1,839 Medicare services from Dr. Gilmartin across 11 procedure codes in 2024, for 503 Medicare patients. Medicare paid $147,020 for them. Every service was in an office.
Dr. Gilmartin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0212024: 88413%
- Other services
- 2023: 3932024: 68274%
- Tests and treatments
- 2023: 2412024: 2305%
- Lab and pathology
- 2023: 02024: 23
- Surgery
- 2023: 02024: 20
Dr. Gilmartin compared with the New York median for internists, 2024
- Dr. Gilmartin
- New York median
- Medicare services
- 1,839vs 4264.3 times
- Medicare patients
- 503vs 1583.2 times
- Part D claims
- 4,303vs 6226.9 times
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Gilmartin'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. Gilmartin and other internists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William A. Gilmartin treated 503 Medicare patients in 2024, average age 77
CMS counts 503 Medicare patients who saw Dr. Gilmartin in 2024. The largest group is 75 to 84, with 221 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 5% 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. Gilmartin's median patient age at 74, with 44% women.
Dr. Gilmartin's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Gilmartin's Medicare patients by sex, 2024
- Women23747%
- Men26653%
Chronic conditions among Dr. Gilmartin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis40%
- Ischemic heart disease39%
- Anxiety22%
- Cancer21%
- Chronic kidney disease19%
- Diabetes19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gilmartin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women44%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William A. Gilmartin wrote 4,789 Medicare Part D claims in 2024
In 2024, Dr. Gilmartin wrote 4,789 Medicare Part D claims for 508 patients. 91% of them were for generic drugs. CMS names the drug for 4,303 of them, across 73 drugs with 11 or more claims each, at $192,523 in total drug cost. In 2023, CMS named 4,814 claims across 77 drugs.
Dr. Gilmartin's Part D claims by kind of drug, 2024
- Generic4,351 claims91%
- Brand-name424 claims9%
- Other14 claims0%
Dr. Gilmartin'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. Gilmartin's Part D claims, 2024
- Antibiotics1%66 of 4,789 claims
- Antipsychotics, patients 65 and over0%16 of 4,789 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: 4,8142024: 4,30311%
Drugs named by CMS: 73 in 2024, 77 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
Dr. William A. Gilmartin offers telehealth to Medicare patients
Dr. Gilmartin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Gilmartin as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William A. Gilmartin received $2,807 in industry payments from 2016 to 2025
CMS Open Payments shows 151 general payments to Dr. Gilmartin from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $344.
General payments to Dr. Gilmartin by program year, 2016 to 2025
Companies that paid Dr. Gilmartin the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William A. Gilmartin graduated from Georgetown University School Of Medicine
Dr. Gilmartin graduated from Georgetown University School Of Medicine in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William A. Gilmartin'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 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) |
| 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. William A. Gilmartin
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. William A. Gilmartin's NPI number?
Dr. William A. Gilmartin's NPI number is 1457454670. It was assigned on September 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William A. Gilmartin?
Dr. William A. Gilmartin is an internist in Southampton, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. William A. Gilmartin practice?
Dr. Gilmartin practices at 325 Meeting House Ln, Southampton, NY 11968. Dr. Gilmartin's primary practice is Meeting House Lane Medical Practice in Southampton, New York. Dmand AI also links Dr. Gilmartin to 2 group practices and clinics, 2 home health agencies and 1 medical group.
What is Dr. William A. Gilmartin's office phone number?
The practice phone on file for Dr. Gilmartin is (631) 283-2430.
What is Dr. William A. Gilmartin's medical license number?
Dr. Gilmartin holds New York license 227116.
Which hospitals is Dr. William A. Gilmartin affiliated with?
Dr. Gilmartin is affiliated with Stony Brook University Hospital.
What medical group is Dr. William A. Gilmartin part of?
Dr. Gilmartin is linked to Meeting House Lane Medical Practice. Dmand AI links Dr. Gilmartin to 1 more medical group.
Does Dr. William A. Gilmartin accept Medicare?
Yes. CMS data shows Dr. Gilmartin billed Medicare for 1,839 services in 2024, and Dr. Gilmartin accepts Medicare assignment.
Does Dr. William A. Gilmartin offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Gilmartin as offering telehealth services.
How many Medicare patients does Dr. William A. Gilmartin see?
CMS counts 503 Medicare patients who saw Dr. Gilmartin in 2024, with an average age of 77.
Show 5 more questionsShow fewer questions
What services does Dr. William A. Gilmartin bill to Medicare?
In 2024, Dr. Gilmartin's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G2211).
Where did Dr. William A. Gilmartin go to medical school?
Dr. Gilmartin graduated from Georgetown University School Of Medicine in 1993.
What drugs does Dr. William A. Gilmartin prescribe most?
In 2024 Medicare Part D data, Dr. Gilmartin's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. William A. Gilmartin received payments from drug or device companies?
CMS Open Payments shows $2,807 in general payments to Dr. Gilmartin from 24 companies from 2016 to 2025. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. William A. Gilmartin been practicing?
Dr. Gilmartin graduated from medical school in 1993, 33 years ago.
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