Crystal Ann Fox, MD
Hospitalist Physician · Portland, ME
Crystal Ann Fox, MD is a hospitalist physician with a practice address in Portland, Maine, and NPI 1528302064, issued on Nov 21, 2012. Check the license (Maine MD22907, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Crystal Ann Fox
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- MD22907 ME
125062499 IL
Self-reported in NPPES; status is on the state search - Practice location
- 22 Bramhall St, Portland, ME 04102
- Phone
- (207) 662-0111
- Enumerated
- Nov 21, 2012
- Record last updated
- May 2, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190503002165); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 245 in Maine → Look up another NPI →
Also registered at 22 Bramhall St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Crystal Ann Fox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD22907Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average hospitalist physician in 2024
120 Medicare Part D claims for 35 beneficiaries, against an average of 521 among the 21,613 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).
Crystal Ann Fox among 245 hospitalist physician records in Maine
Crystal Ann Fox, MD is one of 245 hospitalist physician records with a practice address in Maine. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 49% of them.
- NPI issued2012 · 49% of these records are older, 48% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2012 · median 2012 among the 206 with a school on file
- Record last updated2019 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
81 hospitalist physician records list a practice address in Portland
They are 81 of the 6,022 NPPES records with a practice address in Portland, and 245 hospitalist physician records in Maine.
All 245 in Maine → Every provider in Portland → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Lisa Almeder, MDPortland, ME 041021033238332
- Jeffrey Balke, MDPortland, ME 041021285694109
- Lane Beatty, MDPortland, ME 041021467533166
- Thomas Charrette, MDPortland, ME 041021679565626
- Anne Dean, MDPortland, ME 041021801932884
- Kathryn Diamond-Falk, MDPortland, ME 041021306045034
- Marc Jacquet, MDPortland, ME 041021740212364
- Tara Lagu, MDPortland, ME 041021306943980
Common questions
What is Crystal Ann Fox, MD's NPI number?
Crystal Ann Fox, MD's National Provider Identifier (NPI) is 1528302064, issued on Nov 21, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Crystal Ann Fox, MD located?
The NPPES record lists a practice address at 22 Bramhall St, Portland, ME, 04102. Phone: (207) 662-0111. Providers update this record themselves, so call before visiting.
How can I verify Crystal Ann Fox, MD's license?
NPPES lists Maine license number MD22907, 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 Crystal Ann Fox, MD prescribe under Medicare Part D?
In 2024, Crystal Ann Fox, MD had 120 Medicare Part D claims for 35 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Crystal Ann Fox, 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.