Dr. Hannah Holcombe Larsen, MD
- Medicare services, 2022
- 31
- Medicare patients, 2024
- 15
- Part D claims, 2024
- 2,076
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 125 Hartwell Ave, Lexington, MA 02421
- Practice phone
- Call (978) 369-1113
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Eliot Center
Lexington, Massachusetts
Find Dr. 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.
Dr. Hannah Holcombe Larsen is a psychiatrist in Lexington, Massachusetts
Dr. Larsen practices at Eliot Center in Lexington, Massachusetts.
Dr. Larsen's NPI, 1376786202, was assigned on April 7, 2009. Dr. Larsen graduated from Emory University School of Medicine in 2009. Dr. Larsen holds Massachusetts license 247396.
- NPI
- 1376786202NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678714151
- NPI enumeration date
- April 7, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (978) 369-1113
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hannah Holcombe Larsen practices at Eliot Center in Lexington, Massachusetts
Dr. Larsen's primary practice is Eliot Center, at 125 Hartwell Ave, Lexington, MA 02421 in Middlesex County. The practice phone is (978) 369-1113.
- Eliot Center125 Hartwell Ave, Lexington, MA 02421 · Middlesex CountyPhone(978) 369-1113
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Hannah Holcombe Larsen is affiliated with 2 sites of care and 1 medical group
Dr. Larsen's primary practice is Eliot Center in Lexington, Massachusetts. Dr. Larsen is also affiliated with Salem Hospital. The medical group on file is Eliot Community Human Services.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Hannah Holcombe Larsen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Larsen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Eliot Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Hannah Holcombe Larsen is one of 1,857 psychiatrists in Massachusetts
Psychiatry is Dr. Larsen's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Larsen is licensed in Massachusetts.
Specialties and state licenses
- Psychiatry, MassachusettsPrimary
Psychiatrists near Dr. Larsen
Counts of psychiatrists 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. Hannah Holcombe Larsen billed Medicare for 31 services in 2022
CMS data shows 31 Medicare services from Dr. Larsen across 1 procedure code in 2022, all of them office visits, for 15 Medicare patients. Medicare paid $2,421 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Larsen's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 542022: 3143%
Dr. Larsen compared with the Massachusetts median for psychiatrists, 2022
- Dr. Larsen
- Massachusetts median
- Medicare services
- 31vs 17282% below
- Medicare patients
- 15vs 4264% below
- Part D claims
- 1,905vs 9220.7 times
Medians across 2,056 psychiatrists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Larsen's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Larsen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Larsen and other psychiatrists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hannah Holcombe Larsen treated 15 Medicare patients in 2024, average age 48
CMS counts 15 Medicare patients who saw Dr. Larsen in 2024. 75% of them have schizophrenia and other psychoses. Their average risk score is 0.89, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Larsen's median patient age at 44, with 33% women.
Chronic conditions among Dr. Larsen's Medicare patients, 2024
- Schizophrenia and other psychoses75%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 44
Patient panel by sex, all payers
- Women33%
- Men67%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Hannah Holcombe Larsen wrote 2,076 Medicare Part D claims in 2024
In 2024, Dr. Larsen wrote 2,076 Medicare Part D claims for 70 patients. 90% of them were for generic drugs. CMS names the drug for 1,905 of them, across 43 drugs with 11 or more claims each, at $197,653 in total drug cost. In 2023, CMS named 1,740 claims across 43 drugs.
Dr. Larsen's Part D claims by kind of drug, 2024
- Generic1,875 claims90%
- Brand-name201 claims10%
Dr. Larsen'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. Larsen's Part D claims, 2024
- Antipsychotics, patients 65 and over4%88 of 2,076 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: 1,7402024: 1,9059%
Drugs named by CMS: 43 in 2024, 43 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. Hannah Holcombe Larsen offers telehealth to Medicare patients
Dr. Larsen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Larsen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Hannah Holcombe Larsen graduated from Emory University School of Medicine
Dr. Larsen graduated from Emory University School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Hannah Holcombe 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 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 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) |
| 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. Hannah Holcombe 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 Dr. Hannah Holcombe Larsen's NPI number?
Dr. Hannah Holcombe Larsen's NPI number is 1376786202. It was assigned on April 7, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Hannah Holcombe Larsen?
Dr. Hannah Holcombe Larsen is a psychiatrist in Lexington, Massachusetts. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Hannah Holcombe Larsen practice?
Dr. Larsen practices at 125 Hartwell Ave, Lexington, MA 02421. Dr. Larsen's primary practice is Eliot Center in Lexington, Massachusetts.
What is Dr. Hannah Holcombe Larsen's office phone number?
The practice phone on file for Dr. Larsen is (978) 369-1113.
What is Dr. Hannah Holcombe Larsen's medical license number?
Dr. Larsen holds Massachusetts license 247396.
Which hospitals is Dr. Hannah Holcombe Larsen affiliated with?
Dr. Larsen is affiliated with Salem Hospital.
What medical group is Dr. Hannah Holcombe Larsen part of?
Dr. Larsen is linked to Eliot Community Human Services.
Does Dr. Hannah Holcombe Larsen accept Medicare?
Yes. CMS data shows Dr. Larsen billed Medicare for 31 services in 2022, and Dr. Larsen accepts Medicare assignment.
Does Dr. Hannah Holcombe Larsen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Larsen as offering telehealth services.
How many Medicare patients does Dr. Hannah Holcombe Larsen see?
CMS counts 15 Medicare patients who saw Dr. Larsen in 2024, with an average age of 48.
Show 4 more questionsShow fewer questions
What services does Dr. Hannah Holcombe Larsen bill to Medicare?
In 2022, Dr. Larsen's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Hannah Holcombe Larsen go to medical school?
Dr. Larsen graduated from Emory University School of Medicine in 2009.
What drugs does Dr. Hannah Holcombe Larsen prescribe most?
In 2024 Medicare Part D data, Dr. Larsen's most prescribed drugs by claims were Olanzapine, Clozapine and Aripiprazole.
How long has Dr. Hannah Holcombe Larsen been practicing?
Dr. Larsen graduated from medical school in 2009, 17 years ago.
Selling to psychiatry practices?
See psychiatrists in Massachusetts by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card