Bill Calvin Isaacs, M.D.
Family Medicine Physician · Canadian, TX
Bill Calvin Isaacs, M.D. is a family medicine physician with a practice address in Canadian, Texas, and NPI 1962528596, issued on Mar 22, 2007. Check the license (Texas F4112, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Bill Calvin Isaacs
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- F4112 TX
Self-reported in NPPES; status is on the state search - Practice location
- 817 Hillside Avenue, Canadian, TX 79014
- Phone
- (806) 323-9307
- Enumerated
- Mar 22, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 033060701 TX
- Medicare enrollment
- Enrolled (PECOS I20090113000890); may accept Medicare assignment
- Medical or professional school
- Southwest School Of Medicine And Hospital, 1979
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 817 Hillside Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Valerie Verbi, M.D.Family Medicine Physician1881710812
Verify Bill Calvin Isaacs in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license F4112Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% fewer Medicare Part D claims than the average family medicine physician in 2024
3,433 Medicare Part D claims for 186 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 39 claims were for opioids.
Most prescribed
- Levothyroxine Sodium151 claims
- Hydrochlorothiazide141 claims
- Amlodipine Besylate133 claims
- Rosuvastatin Calcium125 claims
- Metformin Hcl Er120 claims
- Atorvastatin Calcium101 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.
Bill Calvin Isaacs among 11,119 family medicine physician records in Texas
Bill Calvin Isaacs, M.D. is one of 11,119 family medicine physician records with a practice address in Texas. 82% 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 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1979 · median 2004 among the 7,095 with a school on file
- Record last updated2007 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 family medicine physician records list a practice address in Canadian
They are 5 of the 21 NPPES records with a practice address in Canadian, and 11,119 family medicine physician records in Texas.
All 11,119 in Texas → Every provider in Canadian → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- George Cook, MDCanadian, TX 790141518959147
- Anna Isaacs, M.D.Canadian, TX 790141831584689
- Roy Kendrick, MDCanadian, TX 790141710979349
- Valerie Verbi, M.D.Canadian, TX 790141881710812
- Dennis Canon, MDCanyon, TX 790151578650586
- Harry Cazzola, MDCanyon, TX 790151487673695
- David Clarke, MDCanyon, TX 790151245241231
- Amanda Hartman, M.D.Canyon, TX 790151003159856
Common questions
What is Bill Calvin Isaacs, M.D.'s NPI number?
Bill Calvin Isaacs, M.D.'s National Provider Identifier (NPI) is 1962528596, issued on Mar 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Bill Calvin Isaacs, M.D. located?
The NPPES record lists a practice address at 817 Hillside Avenue, Canadian, TX, 79014. Phone: (806) 323-9307. Providers update this record themselves, so call before visiting.
How can I verify Bill Calvin Isaacs, M.D.'s license?
NPPES lists Texas license number F4112, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Bill Calvin Isaacs, M.D. prescribe under Medicare Part D?
In 2024, Bill Calvin Isaacs, M.D. had 3,433 Medicare Part D claims for 186 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.