Heather Marie Larson, PA
- Medicare services, 2024
- 194
- Medicare patients, 2024
- 142
- Part D claims, 2024
- 2,960
- Hospital affiliations
- 4
- Industry payments
- $3,919
- Practice address
- 310 Sterling Dr, Orchard Park, NY 14127
- Practice phone
- Call (716) 677-9220
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Southtowns Gastroenterology
Orchard Park, New York
Find Heather Larson'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.
Heather Marie Larson is a physician assistant in Orchard Park, New York
Heather Larson practices at Southtowns Gastroenterology in Orchard Park, New York.
Heather Larson's NPI, 1003249269, was assigned on August 12, 2013. Heather Larson holds New York license 016812-1.
- NPI
- 1003249269NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971747882
- NPI enumeration date
- August 12, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (716) 677-9220
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Heather Marie Larson practices at Southtowns Gastroenterology in Orchard Park, New York
Heather Larson's primary practice is Southtowns Gastroenterology, at 310 Sterling Dr, Orchard Park, NY 14127 in Erie County. The practice phone is (716) 677-9220.
- Southtowns Gastroenterology310 Sterling Dr, Orchard Park, NY 14127 · Erie CountyPhone(716) 677-9220
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Heather Marie Larson is affiliated with 6 sites of care and 1 medical group
Heather Larson's primary practice is Southtowns Gastroenterology in Orchard Park, New York. Heather Larson is also affiliated with Buffalo General Medical Center/Gates Vascular Institute. The medical group on file is Southtowns Gastroenterology. Dmand AI also links Heather Larson to 3 more hospitals and 1 group practice or clinic, 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 Heather Marie Larson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Heather Larson practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Southtowns Gastroenterology | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Heather Marie Larson is one of 11,456 physician assistants in New York
Physician assistant is Heather Larson's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Heather Larson is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Heather Larson is licensed in New York.
Specialties and state licenses
- Physician assistant, New YorkPrimary
Clinical focus
Dmand AI lists acute gastroduodenitis, chronic indigestion, gastroenteritis and upper respiratory infection (URI) among the conditions Heather Larson treats.
Physician assistants near Heather Larson
Counts of physician assistants 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
Heather Marie Larson billed Medicare for 194 services in 2024
CMS data shows 194 Medicare services from Heather Larson across 3 procedure codes in 2024, all of them office visits, for 142 Medicare patients. Medicare paid $12,254 for them. Every service was in an office.
Heather Larson compared with the New York median for physician assistants, 2024
- Heather Larson
- New York median
- Medicare services
- 194vs 17610% above
- Medicare patients
- 142vs 7882% above
- Part D claims
- 2,731vs 24511.1 times
Medians across 6,477 physician assistants in New York with Dmand AI profiles that report each measure.
Heather Larson'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Heather Marie Larson treated 142 Medicare patients in 2024, average age 71
CMS counts 142 Medicare patients who saw Heather Larson in 2024. The largest group is 65 to 74, with 70 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 1.23, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Heather Larson's median patient age at 67, with 64% women.
Heather Larson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Heather Larson's Medicare patients by sex, 2024
- Women9365%
- Men4935%
Chronic conditions among Heather Larson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Anxiety33%
- Chronic kidney disease33%
- Mood disorders33%
- Diabetes30%
- Ischemic heart disease28%
Share of Medicare patients with each condition. A patient can have several.
Heather Larson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women64%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Heather Marie Larson wrote 2,960 Medicare Part D claims in 2024
In 2024, Heather Larson wrote 2,960 Medicare Part D claims for 858 patients. 85% of them were for generic drugs. CMS names the drug for 2,731 of them, across 38 drugs with 11 or more claims each, at $644,879 in total drug cost.
Heather Larson's Part D claims by kind of drug, 2024
- Generic2,516 claims85%
- Brand-name444 claims15%
Heather Larson'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 Heather Larson's Part D claims, 2024
- Antibiotics3%81 of 2,960 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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 Heather Marie Larson takes part in Medicare
Heather Larson 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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Heather Marie Larson received $3,919 in industry payments in 2025
CMS Open Payments shows 220 general payments to Heather Larson from 21 drug and device companies in 2025. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $1,018.
General payments to Heather Larson by kind, 2025 to 2025
- Food and beverage$3,89999%
- Education$201%
Companies that paid Heather Larson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Heather Marie Larson is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Heather Marie Larson'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 Heather Marie Larson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Heather Marie Larson's NPI number?
Heather Marie Larson's NPI number is 1003249269. It was assigned on August 12, 2013, and it is active in the NPI Registry.
What does Heather Marie Larson specialize in?
Heather Marie Larson is a physician assistant in Orchard Park, New York. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Heather Marie Larson practice?
Heather Larson practices at 310 Sterling Dr, Orchard Park, NY 14127. Heather Larson's primary practice is Southtowns Gastroenterology in Orchard Park, New York. Dmand AI also links Heather Larson to 3 hospitals and 1 group practice or clinic.
What is Heather Marie Larson's office phone number?
The practice phone on file for Heather Larson is (716) 677-9220.
What is Heather Marie Larson's medical license number?
Heather Larson holds New York license 016812-1.
Which hospitals is Heather Marie Larson affiliated with?
Heather Larson is affiliated with Buffalo General Medical Center/Gates Vascular Institute. Dmand AI links Heather Larson to 3 more hospitals.
What medical group is Heather Marie Larson part of?
Heather Larson is linked to Southtowns Gastroenterology.
Does Heather Marie Larson accept Medicare?
Yes. CMS data shows Heather Larson billed Medicare for 194 services in 2024, and Heather Larson accepts Medicare assignment.
How many Medicare patients does Heather Marie Larson see?
CMS counts 142 Medicare patients who saw Heather Larson in 2024, with an average age of 71.
Is Heather Marie Larson board certified?
Yes. Heather Larson is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
Show 4 more questionsShow fewer questions
What services does Heather Marie Larson bill to Medicare?
In 2024, Heather Larson's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, new patient (99204).
What drugs does Heather Marie Larson prescribe most?
In 2024 Medicare Part D data, Heather Larson's most prescribed drugs by claims were Famotidine, Pantoprazole Sodium and Omeprazole.
Has Heather Marie Larson received payments from drug or device companies?
CMS Open Payments shows $3,919 in general payments to Heather Larson from 21 companies from 2025 to 2025. The largest total came from Abbvie Inc.
How long has Heather Marie Larson been practicing?
Heather Larson graduated from medical school in 2013, 13 years ago.
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