William David Larsen, FNP
- Medicare patients, 2024
- 172
- Part D claims, 2024
- 2,981
- MIPS score, 2024
- 94
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 1020 Craft Rd, Ithaca, NY 14850
- Practice phone
- Call (607) 274-4011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cayuga Medical Associates
Ithaca, New York
Find William Larsen'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.
William David Larsen is a family nurse practitioner in Ithaca, New York
William Larsen practices at Cayuga Medical Associates in Ithaca, New York.
William Larsen's NPI, 1124409099, was assigned on June 16, 2015. William Larsen holds New York license 339752.
- NPI
- 1124409099NPI Registry (opens in a new tab)
- NPI enumeration date
- June 16, 2015
- NPI status
- Active
- Practice phone
- (607) 274-4011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
William David Larsen practices at Cayuga Medical Associates in Ithaca, New York
William Larsen's primary practice is Cayuga Medical Associates, at 1020 Craft Rd, Ithaca, NY 14850 in Tompkins County. The practice phone is (607) 274-4011.
- Cayuga Medical Associates1020 Craft Rd, Ithaca, NY 14850 · Tompkins CountyPhone(607) 274-4011
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
William David Larsen is affiliated with 3 sites of care and 2 medical groups
William Larsen's primary practice is Cayuga Medical Associates in Ithaca, New York. William Larsen is also affiliated with Cayuga Medical Center. The medical group on file is Cayuga Medical Associates. Dmand AI also links William Larsen to 1 more group practice or clinic 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 William David Larsen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Larsen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cayuga Medical Associates | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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William David Larsen is one of 10,214 family nurse practitioners in New York
Family is William Larsen's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. William Larsen is licensed in New York.
Specialties and state licenses
- Family nurse practitioner, New YorkPrimary
Family nurse practitioners near William Larsen
Counts of family nurse practitioners 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
William David Larsen treated 172 Medicare patients in 2024, average age 74
CMS counts 172 Medicare patients who saw William Larsen in 2024. The largest group is 65 to 74, with 71 patients. 75% of them have diabetes, and 75% have high blood pressure. 15% are also on Medicaid. Their average risk score is 1.50, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William Larsen's median patient age at 64, with 52% women.
William Larsen's Medicare patients by age, 2024
William Larsen's Medicare patients by sex, 2024
- Women8449%
- Men8851%
Chronic conditions among William Larsen's Medicare patients, 2024
- Diabetes75%
- High blood pressure75%
- High cholesterol65%
- Arthritis45%
- Chronic kidney disease37%
- Ischemic heart disease32%
- Mood disorders24%
- Atrial fibrillation23%
Share of Medicare patients with each condition. A patient can have several.
William Larsen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women52%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William David Larsen wrote 2,981 Medicare Part D claims in 2024
In 2024, William Larsen wrote 2,981 Medicare Part D claims for 293 patients. 43% of them were for generic drugs.
William Larsen's Part D claims by kind of drug, 2024
- Generic1,271 claims43%
- Brand-name1,389 claims47%
- Other321 claims11%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
William David Larsen scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for William Larsen for performance year 2024, reported through an alternative payment model (APM).
William Larsen's MIPS scores, performance year 2024
- 94of 100Final score
- 82.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Sources for William David Larsen'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 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 (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| 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 William David Larsen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William David Larsen's NPI number?
William David Larsen's NPI number is 1124409099. It was assigned on June 16, 2015, and it is active in the NPI Registry.
What does William David Larsen specialize in?
William David Larsen is a family nurse practitioner in Ithaca, New York. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does William David Larsen practice?
William Larsen practices at 1020 Craft Rd, Ithaca, NY 14850. William Larsen's primary practice is Cayuga Medical Associates in Ithaca, New York. Dmand AI also links William Larsen to 1 group practice or clinic and 1 medical group.
What is William David Larsen's office phone number?
The practice phone on file for William Larsen is (607) 274-4011.
What is William David Larsen's medical license number?
William Larsen holds New York license 339752.
Which hospitals is William David Larsen affiliated with?
William Larsen is affiliated with Cayuga Medical Center.
What medical group is William David Larsen part of?
William Larsen is linked to Cayuga Medical Associates. Dmand AI links William Larsen to 1 more medical group.
What is William David Larsen's MIPS score?
William Larsen's MIPS final score for performance year 2024 is 94 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does William David Larsen see?
CMS counts 172 Medicare patients who saw William Larsen in 2024, with an average age of 74.
How long has William David Larsen been practicing?
William Larsen graduated from medical school in 2015, 11 years ago.
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