Diana Lapp, M.D.
Family Medicine Physician · Portland, ME
Diana Lapp, M.D. is a family medicine physician with a practice address in Portland, Maine, and NPI 1104982602, issued on Dec 29, 2006. Check the license on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Diana Lapp
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD32962 DC
Self-reported in NPPES; status is on the state search - Practice location
- 63 Preble St, Portland, ME 04101
- Phone
- (207) 874-2141
- Enumerated
- Dec 29, 2006
- Record last updated
- Apr 2, 2025
- Fax
- (207) 874-2164
- Medicare enrollment
- Enrolled (PECOS I20100827000406); accepts Medicare assignment
- Medical or professional school
- Howard University College Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,172 in Maine → Look up another NPI →
Also registered at 63 Preble St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Janice Chamberland, RNRegistered Nurse1083200083
- Rachael Creisher, DMDDentist1215467881
- Dawn Demakis, RDHDental Hygienist1760224265
- Mary Dowd, MDFamily Medicine Physician1356305411
- Grace Fosler, LCPC-CProfessional Counselor1710654256
- Kristen Hoglund, DMDDentist1699346627
Verify Diana Lapp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average family medicine physician in 2024
383 Medicare Part D claims for 26 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Metformin Hcl29 claims
- Atorvastatin Calcium23 claims
- Levothyroxine Sodium22 claims
- Albuterol Sulfate Hfa20 claims
- Buprenorphine-Naloxone14 claims
- Losartan Potassium14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Portland Community Health CenterPortland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana Lapp among 1,172 family medicine physician records in Maine
Diana Lapp, M.D. is one of 1,172 family medicine physician records with a practice address in Maine. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 52% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1997 · median 2008 among the 668 with a school on file
- Record last updated2025 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
89 family medicine physician records list a practice address in Portland
They are 89 of the 6,022 NPPES records with a practice address in Portland, and 1,172 family medicine physician records in Maine.
All 1,172 in Maine → Every provider in Portland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jacquelyn Cawley, DOPortland, ME 041011346299146
- Peggy Cyr, M.D.Portland, ME 041011760584767
- Diane Dickinson, M.D.Portland, ME 041011104860519
- Mary Dowd, MDPortland, ME 041011356305411
- Christina Holt, M.D.Portland, ME 041011912935339
- Ava Moskin, MDPortland, ME 041011457342735
- Bethany Picker, MDPortland, ME 041011407952468
- Debra Rothenberg, M.D.Portland, ME 041011245265776
Common questions
What is Diana Lapp, M.D.'s NPI number?
Diana Lapp, M.D.'s National Provider Identifier (NPI) is 1104982602, issued on Dec 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana Lapp, M.D. located?
The NPPES record lists a practice address at 63 Preble St, Portland, ME, 04101. Phone: (207) 874-2141. Providers update this record themselves, so call before visiting.
How can I verify Diana Lapp, M.D.'s license?
Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Diana Lapp, M.D. prescribe under Medicare Part D?
In 2024, Diana Lapp, M.D. had 383 Medicare Part D claims for 26 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.