Daniel J. Diekema, MD
Infectious Disease Physician · South Portland, ME
Daniel J. Diekema, MD is an infectious disease physician with a practice address in South Portland, Maine, and NPI 1104801489, issued on Dec 9, 2005. Check the license (Maine MD14027, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Daniel J. Diekema
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- MD14027 ME
28731 IA
Self-reported in NPPES; status is on the state search - Practice location
- 41 Donald B Dean Dr, South Portland, ME 04106
- Phone
- (207) 661-7901
- Enumerated
- Dec 9, 2005
- Record last updated
- Sep 12, 2022
- Medicaid ID
- 0098376 IA
- Medicare enrollment
- Enrolled (PECOS I20221028002215); accepts Medicare assignment
- Medical or professional school
- Vanderbilt University School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 35 in Maine → Look up another NPI →
Also registered at 41 Donald B Dean Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Colton, LCSWClinical Social Worker1689730574
- Kathryn Cutting, MS, RD, LDRegistered Dietitian1487255675
- Melissa Page, MS, RD, CSOWM, LDNObesity and Weight Management Nutrition Registered Dietitian1518217132
- Kelly Whitaker, RDNRegistered Dietitian1043848039
Verify Daniel J. Diekema in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD14027Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average infectious disease physician in 2024
13 Medicare Part D claims, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D.
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.
The MIPS final score for 2023 (Medicare payment program): 98.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- MainehealthPortland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Daniel J. Diekema among 35 infectious disease physician records in Maine
Daniel J. Diekema, MD is one of 35 infectious disease physician records with a practice address in Maine. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 97% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1989 · median 2008 among the 25 with a school on file
- Record last updated2022 · 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 207RI0200X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Maine
There are 35 infectious disease physician records in Maine.
All 35 in Maine → Every provider in South Portland → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Leyla Azis, MDSouth Portland, ME 041061487871414
- Stephen Rawlings, M.D., PH.D.South Portland, ME 041061861888984
- Nicole Rebusi, MDSouth Portland, ME 041061285193177
- Miguel Saldivar, M.D.South Portland, ME 041061205273661
- Robert Smith, MDSouth Portland, ME 041061750340972
- Patricia Stogsdill, MDSouth Portland, ME 041061326009259
- Kinna Thakarar, DOSouth Portland, ME 041061396905048
- Christopher Vo, MDSouth Portland, ME 041061841794591
Common questions
What is Daniel J. Diekema, MD's NPI number?
Daniel J. Diekema, MD's National Provider Identifier (NPI) is 1104801489, issued on Dec 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Daniel J. Diekema, MD located?
The NPPES record lists a practice address at 41 Donald B Dean Dr, South Portland, ME, 04106. Phone: (207) 661-7901. Providers update this record themselves, so call before visiting.
How can I verify Daniel J. Diekema, MD's license?
NPPES lists Maine license number MD14027, as entered by the provider. 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 Daniel J. Diekema, MD prescribe under Medicare Part D?
In 2024, Daniel J. Diekema, MD had 13 Medicare Part D claims; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Daniel J. Diekema, MD's MIPS final score?
The 2023 MIPS final score is 98.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.