William Frank Cox, M.D.
Internal Medicine Physician · Dallas, TX
William Frank Cox, M.D. is an internal medicine physician with a practice address in Dallas, Texas, and NPI 1922047448, issued on Jun 6, 2006. Check the license (Texas J7768, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Frank Cox
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- J7768 TX
Self-reported in NPPES; status is on the state search - Practice location
- 8230 Walnut Hill LN, Dallas, TX 75231
- Phone
- (214) 363-6217
- Enumerated
- Jun 6, 2006
- Record last updated
- Aug 7, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (214) 373-4236
- Medicare enrollment
- Enrolled (PECOS I20031208000659); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At Houston, 1993
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 8230 Walnut Hill LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Frank Cox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license J7768Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average internal medicine physician in 2024
3,787 Medicare Part D claims for 280 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 167 claims were for opioids.
Most prescribed
- Amlodipine Besylate192 claims
- Levothyroxine Sodium176 claims
- Atorvastatin Calcium173 claims
- Rosuvastatin Calcium172 claims
- Alprazolam96 claims
- Lisinopril89 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: $223.57
8 payments; by number, the most common kind was food and beverage; the largest payer was Cleerly, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
William Frank Cox among 9,175 internal medicine physician records in Texas
William Frank Cox, M.D. is one of 9,175 internal 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1993 · median 2004 among the 6,088 with a school on file
- Record last updated2013 · 49% 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 Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
956 internal medicine physician records list a practice address in Dallas
They are 956 of the 36,304 NPPES records with a practice address in Dallas, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Dallas → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Paul Cary, MDDallas, TX 752311548250269
- Melanie Christina, M.D.Dallas, TX 752311003805292
- Gary Goff, M.D.Dallas, TX 752311629050521
- Jacqueline Hubbard, M.D.Dallas, TX 752311972588333
- Mitchell Huebner, MDDallas, TX 752311215938071
- Shamim Khambati, M.D.Dallas, TX 752311073598413
- Chiao Lie, MDDallas, TX 752311487635900
- Susan McKinney, M.D.Dallas, TX 752311194700542
Common questions
What is William Frank Cox, M.D.'s NPI number?
William Frank Cox, M.D.'s National Provider Identifier (NPI) is 1922047448, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Frank Cox, M.D. located?
The NPPES record lists a practice address at 8230 Walnut Hill LN, Dallas, TX, 75231. Phone: (214) 363-6217. Providers update this record themselves, so call before visiting.
How can I verify William Frank Cox, M.D.'s license?
NPPES lists Texas license number J7768, 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 William Frank Cox, M.D. prescribe under Medicare Part D?
In 2024, William Frank Cox, M.D. had 3,787 Medicare Part D claims for 280 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.