Gregory Blair, M.D.
Hematology & Oncology Physician · Carmichael, CA
Gregory Blair, M.D. is a hematology & oncology physician with a practice address in Carmichael, California, and NPI 1598731291, issued on Feb 23, 2006. Check the license (California G065481, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory Blair
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- G065481 CA
G65481 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6555 Coyle Ave, Carmichael, CA 95608
- Phone
- (916) 961-0258
- Enumerated
- Feb 23, 2006
- Record last updated
- Apr 28, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (916) 962-1973
- Medicare enrollment
- Enrolled (PECOS I20220325001345); accepts Medicare assignment
- Medical or professional school
- St. Louis College Of Physicians And Surgeons, 1983
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 6555 Coyle Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kimberly Beatty, FNP-CFamily Nurse Practitioner1164895553
- Andrew Bozdech, MDHospitalist Physician1962540575
- Ying Brown, M.D.Family Medicine Physician1407063357
- Mary Chrisman, NP-CNurse Practitioner1750886412
- Gregory Cohen, M.D.Pediatrics Physician1639258023
Verify Gregory Blair in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G065481Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
581 Medicare Part D claims for 79 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 37 claims were for opioids.
Most prescribed
- Anastrozole78 claims
- Ondansetron Hcl55 claims
- Prednisone36 claims
- Prochlorperazine Maleate35 claims
- Hydrocodone-Acetaminophen23 claims
- Aprepitant20 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.
Industry payments in 2024: $930.52
35 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sierra Hematology And Oncology Medical CentersCarmichael, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Blair among 1,583 hematology & oncology physician records in California
Gregory Blair, M.D. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% 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, 54% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1983 · median 2003 among the 1,124 with a school on file
- Record last updated2017 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Carmichael → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- John Kailath, M.D.Carmichael, CA 956081619943313
- Hanh La, M.D.Carmichael, CA 956081316143902
- Ram Lalchandani, M.D.Carmichael, CA 956081114993813
- Babak Rajabi, MDCarmichael, CA 956081194986794
- Shahzad Siddique, MDCarmichael, CA 956081912171034
- Navneet Virk, MDCarmichael, CA 956081275703076
- Thomas Roschak, MDAuburn, CA 956031730252917
- Dron Gauchan, M.DAuburn, CA 956021487805784
Common questions
What is Gregory Blair, M.D.'s NPI number?
Gregory Blair, M.D.'s National Provider Identifier (NPI) is 1598731291, issued on Feb 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Blair, M.D. located?
The NPPES record lists a practice address at 6555 Coyle Ave, Carmichael, CA, 95608. Phone: (916) 961-0258. Providers update this record themselves, so call before visiting.
How can I verify Gregory Blair, M.D.'s license?
NPPES lists California license number G065481, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Blair, M.D. prescribe under Medicare Part D?
In 2024, Gregory Blair, M.D. had 581 Medicare Part D claims for 79 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.