Ruth Allison Ryan, MD
Neurology Physician · Northampton, MA
Ruth Allison Ryan, MD is a neurology physician with a practice address in Northampton, Massachusetts, and NPI 1205804085, issued on Mar 9, 2006. Check the license (Massachusetts 52145, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Ruth Allison Ryan
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 52145 MA
Self-reported in NPPES; status is on the state search - Practice location
- 90 Conz St, Northampton, MA 01060
- Phone
- (413) 586-2230
- Enumerated
- Mar 9, 2006
- Record last updated
- Jun 5, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (413) 586-3379
- Medicaid ID
- 6178472 MA
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 964 in Massachusetts → Look up another NPI →
Also registered at 90 Conz St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Barbara Dubeck, LMHC, LCSWMental Health Counselor1578689477
Verify Ruth Allison Ryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 52145Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Ruth Allison Ryan among 964 neurology physician records in Massachusetts
Ruth Allison Ryan, MD is one of 964 neurology physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 57% newer
- In a Medicare fileNo · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2008 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Massachusetts
There are 964 neurology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 964 in Massachusetts → Every provider in Northampton → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Jay Levin, M.D.Northampton, MA 010601912267972
- John O'Connell, MDNorthampton, MA 010601417932542
- Daniel Lesley, M.D.Leeds, MA 010531851351878
- Mohammad Hazratji, MDHolyoke, MA 010401578551966
- Muhammad Kareem, MDHolyoke, MA 010401235126061
- Armand Aliotta, M.D.Westfield, MA 010851568498244
- Michael Rossen, M.D.Hadley, MA 010351689675761
- Hebatalla Elhusseiny, M.D.Springfield, MA 011041134570377
Common questions
What is Ruth Allison Ryan, MD's NPI number?
Ruth Allison Ryan, MD's National Provider Identifier (NPI) is 1205804085, issued on Mar 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ruth Allison Ryan, MD located?
The NPPES record lists a practice address at 90 Conz St, Northampton, MA, 01060. Phone: (413) 586-2230. Providers update this record themselves, so call before visiting.
How can I verify Ruth Allison Ryan, MD's license?
NPPES lists Massachusetts license number 52145, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.