Karen Blau, M.D.
Geriatric Medicine (Internal Medicine) Physician · Commack, NY
Karen Blau, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Commack, New York, and NPI 1023236569, issued on Apr 22, 2007. Check the license (New York 162686, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Karen Blau
- Credential
- M.D.
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- 162686 NY
Self-reported in NPPES; status is on the state search - Practice location
- 68 Hauppauge RD, Commack, NY 11725
- Phone
- (631) 715-2000
- Enumerated
- Apr 22, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 508 in New York → Look up another NPI →
Also registered at 68 Hauppauge RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rebecca Claudio-Morales, RPA-CMedical Physician Assistant1457645327
- Barbara Diggle-Fox, R.N., N.P., M.S.Adult Health Nurse Practitioner1477761641
- Maureen Kelly, P.A.Physician Assistant1235275959
- Kathleen Kupferman, N.P.Adult Health Nurse Practitioner1063633378
- Reem Miller, AGPCNPAdult Health Nurse Practitioner1497622120
- Ann Perrino, NPAdult Health Nurse Practitioner1053887562
Verify Karen Blau 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 162686Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
184 Medicare Part D claims, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Levetiracetam52 claims
- Divalproex Sodium26 claims
- Escitalopram Oxalate26 claims
- Metoprolol Succinate26 claims
- Mirtazapine26 claims
- Nifedipine Er26 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.
Karen Blau among 508 geriatric medicine (internal medicine) physician records in New York
Karen Blau, M.D. is one of 508 geriatric medicine (internal medicine) physician records with a practice address in New York. 75% 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 53% of them.
- NPI issued2007 · 53% of these records are older, 33% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 54% of these records are
- Record last updated2007 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in New York
There are 508 geriatric medicine (internal medicine) physician records in New York.
All 508 in New York → Every provider in Commack → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Prabha Pillai, M.DCommack, NY 117251033347182
- Elizabeth Sturm, M.D.Commack, NY 117251003970963
- Alan Lucks, M.D.Centereach, NY 117201891758017
- Lisa Honkanen, MDEast Northport, NY 117311811959372
- Suzanne Fields, M.D.East Setauket, NY 117331629092820
- Jennifer Gonzalez, M.D.East Setauket, NY 117331497853840
- Irene Hwu, MDEast Setauket, NY 117331699936757
- Catherine Nicastri, M.D.East Setauket, NY 117331093730269
Common questions
What is Karen Blau, M.D.'s NPI number?
Karen Blau, M.D.'s National Provider Identifier (NPI) is 1023236569, issued on Apr 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karen Blau, M.D. located?
The NPPES record lists a practice address at 68 Hauppauge RD, Commack, NY, 11725. Phone: (631) 715-2000. Providers update this record themselves, so call before visiting.
How can I verify Karen Blau, M.D.'s license?
NPPES lists New York license number 162686, 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 Karen Blau, M.D. prescribe under Medicare Part D?
In 2024, Karen Blau, M.D. had 184 Medicare Part D claims; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.