Ruth Blash, MD
Internal Medicine Physician · Fishkill, NY
Ruth Blash, MD is an internal medicine physician with a practice address in Fishkill, New York, and NPI 1295849545, issued on Aug 17, 2006. Check the license (New York 200863, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Ruth Blash
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 200863 NY
Self-reported in NPPES; status is on the state search - Practice location
- 600 Westage Business Ctr Dr, Fishkill, NY 12524
- Phone
- (845) 231-5600
- Enumerated
- Aug 17, 2006
- Record last updated
- Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (845) 231-5489
- Medicaid ID
- 02458244 NY
- Medicare enrollment
- Enrolled (PECOS I20070208000142); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 600 Westage Business Ctr Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Arlene Birnbaum, PTPhysical Therapist1255604443
- Caroline Cadmus, PA-CSurgical Physician Assistant1326270067
- Sumy Chang, MDSurgery Physician1770721987
Verify Ruth Blash in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 200863Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
7,076 Medicare Part D claims for 664 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 168 claims were for opioids.
Most prescribed
- Atorvastatin Calcium473 claims
- Levothyroxine Sodium268 claims
- Amlodipine Besylate253 claims
- Lisinopril231 claims
- Omeprazole219 claims
- Losartan Potassium206 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.
Bills Medicare through one group practice
- Optum Medical Care PCFishkill, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ruth Blash among 12,067 internal medicine physician records in New York
Ruth Blash, MD is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1991 · median 2002 among the 7,221 with a school on file
- Record last updated2018 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 internal medicine physician records list a practice address in Fishkill
They are 18 of the 522 NPPES records with a practice address in Fishkill, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Fishkill → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mesbaheddin Balaghi, MDFishkill, NY 125241558366740
- Kay Cynamon, MDFishkill, NY 125241356432371
- Mary Dore, M.D.Fishkill, NY 125241356341549
- Robert Epstein, M.D.Fishkill, NY 125241447256383
- Jose Fontanez, M.D.Fishkill, NY 125241710907415
- Joseph Garvey, M.D.Fishkill, NY 125241760489454
- Daniel Hafner, MDFishkill, NY 125241306817366
- Stephen Katz, M.D.Fishkill, NY 125241952309486
Common questions
What is Ruth Blash, MD's NPI number?
Ruth Blash, MD's National Provider Identifier (NPI) is 1295849545, issued on Aug 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ruth Blash, MD located?
The NPPES record lists a practice address at 600 Westage Business Ctr Dr, Fishkill, NY, 12524. Phone: (845) 231-5600. Providers update this record themselves, so call before visiting.
How can I verify Ruth Blash, MD's license?
NPPES lists New York license number 200863, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ruth Blash, MD prescribe under Medicare Part D?
In 2024, Ruth Blash, MD had 7,076 Medicare Part D claims for 664 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.