Mark William Baker, MD
Emergency Medicine Physician · Aiea, HI
Mark William Baker, MD is an emergency medicine physician with a practice address in Aiea, Hawaii, and NPI 1861547945, issued on Jan 25, 2007. Check the license (Hawaii MD6652, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark William Baker
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD6652 HI
Self-reported in NPPES; status is on the state search - Practice location
- 98-1079 Moanalua RD, Aiea, HI 96701
- Phone
- (330) 493-4443
- Enumerated
- Jan 25, 2007
- Record last updated
- Nov 19, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (330) 493-8677
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 370 in Hawaii → Look up another NPI →
Also registered at 98-1079 Moanalua RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Maria Lourdes Akagi, APRNFamily Nurse Practitioner1811600299
- Roderick Alfonso, M.D.Emergency Medicine Physician1417310293
Verify Mark William Baker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD6652Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% fewer Medicare Part D claims than the average emergency medicine physician in 2024
215 Medicare Part D claims for 174 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 21 claims were for opioids.
Most prescribed
- Cephalexin30 claims
- Cyclobenzaprine Hcl24 claims
- Ondansetron Odt21 claims
- Oxycodone Hcl15 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.
Mark William Baker among 370 emergency medicine physician records in Hawaii
Mark William Baker, MD is one of 370 emergency medicine physician records with a practice address in Hawaii. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 36% of them.
- NPI issued2007 · 36% of these records are older, 50% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2010 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 emergency medicine physician records list a practice address in Aiea
They are 21 of the 1,481 NPPES records with a practice address in Aiea, and 370 emergency medicine physician records in Hawaii.
All 370 in Hawaii → Every provider in Aiea → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Robert Canonico, DOAiea, HI 967011003956905
- Alan Chang, MDAiea, HI 967011235304676
- Jason Fleming, M.D.Aiea, HI 967011306874524
- Dinora Gil, MDAiea, HI 967011386784288
- Linda Jenks, MDAiea, HI 967011831240753
- Andy Lee, MDAiea, HI 967011619908266
- Peter Lee, MDAiea, HI 967011770638876
- Sidney Lee, MDAiea, HI 967011639224736
Common questions
What is Mark William Baker, MD's NPI number?
Mark William Baker, MD's National Provider Identifier (NPI) is 1861547945, issued on Jan 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark William Baker, MD located?
The NPPES record lists a practice address at 98-1079 Moanalua RD, Aiea, HI, 96701. Phone: (330) 493-4443. Providers update this record themselves, so call before visiting.
How can I verify Mark William Baker, MD's license?
NPPES lists Hawaii license number MD6652, as entered by the provider. Search the Hawaii Medical Board at https://cca.hawaii.gov/pvl/boards/medical/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark William Baker, MD prescribe under Medicare Part D?
In 2024, Mark William Baker, MD had 215 Medicare Part D claims for 174 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.