John Frederick Ash, NP
Family Nurse Practitioner · Boston, MA
John Frederick Ash, NP is a family nurse practitioner with a practice address in Boston, Massachusetts, and NPI 1467282079, issued on Aug 7, 2024. Check the license (Massachusetts RN2348348, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Frederick Ash
- Credential
- NP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- RN2348348 MA
Self-reported in NPPES; status is on the state search - Practice location
- 725 Albany St, FL 6, Boston, MA 02118
- Phone
- (617) 638-6525
- Enumerated
- Aug 7, 2024
- Record last updated
- Aug 20, 2024
- Fax
- (617) 638-7448
- Medicare enrollment
- Enrolled (PECOS I20240911000426); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →
Also registered at 725 Albany St, FL 6
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Frederick Ash in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2348348Check 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 family nurse practitioner in 2024
21 Medicare Part D claims for 16 beneficiaries, against an average of 1,305 among the 140,557 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.
Bills Medicare through one group practice
- Evans Medical Foundation IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Frederick Ash among 4,724 family nurse practitioner records in Massachusetts
John Frederick Ash, NP is one of 4,724 family nurse practitioner records with a practice address in Massachusetts. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 86% of them.
- NPI issued2024 · 86% of these records are older, 8% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2023 · median 2019 among the 2,704 with a school on file
- Record last updated2024 · 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 363LF0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
938 family nurse practitioner records list a practice address in Boston
They are 938 of the 41,865 NPPES records with a practice address in Boston, and 4,724 family nurse practitioner records in Massachusetts.
All 4,724 in Massachusetts → Every provider in Boston → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Marjorie Arvedon, FNPBoston, MA 021181376529842
- Ellen Bitz, NPBoston, MA 021181649254798
- Lois Doerr, NPBoston, MA 021181194784546
- Karen Friedman, MS RNC FNPBoston, MA 021181861421299
- Faye Huang, NPBoston, MA 021181366432353
- Terri Lacoursiere Zucchero, PHD, RN, FNP-BCBoston, MA 021181770565475
- Claire Murphy, NP-CBoston, MA 021181568447217
- Nancy Paull, NPBoston, MA 021181457466914
Common questions
What is John Frederick Ash, NP's NPI number?
John Frederick Ash, NP's National Provider Identifier (NPI) is 1467282079, issued on Aug 7, 2024. An NPI identifies a provider in billing; it is not a license.
Where is John Frederick Ash, NP located?
The NPPES record lists a practice address at 725 Albany St, FL 6, Boston, MA, 02118. Phone: (617) 638-6525. Providers update this record themselves, so call before visiting.
How can I verify John Frederick Ash, NP's license?
NPPES lists Massachusetts license number RN2348348, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does John Frederick Ash, NP prescribe under Medicare Part D?
In 2024, John Frederick Ash, NP had 21 Medicare Part D claims for 16 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.