Megan McCain Maddox, M.D.
Internal Medicine Physician · Houston, TX
Megan McCain Maddox, M.D. is an internal medicine physician with a practice address in Houston, Texas, and NPI 1720422884, issued on Apr 19, 2013. Check the license (Texas Q9190, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Megan McCain Maddox
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- Q9190 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4191 Bellaire Blvd Ste 250, Houston, TX 77025
- Phone
- (346) 356-7000
- Enumerated
- Apr 19, 2013
- Record last updated
- Apr 1, 2024
- Fax
- (346) 356-7001
- Medicaid ID
- 394072801 TX
- Medicare enrollment
- Enrolled (PECOS I20180417000259); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In Shreveport, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 4191 Bellaire Blvd Ste 250
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Megan McCain Maddox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license Q9190Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% more Medicare Part D claims than the average internal medicine physician in 2024
5,480 Medicare Part D claims for 417 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 77 claims were for opioids.
Most prescribed
- Atorvastatin Calcium353 claims
- Levothyroxine Sodium208 claims
- Amlodipine Besylate192 claims
- Gabapentin166 claims
- Rosuvastatin Calcium142 claims
- Escitalopram Oxalate136 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: $2,704.12
147 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Bills Medicare through one group practice
- Tmh Physician Associates PLLCSugar Land, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Megan McCain Maddox among 9,175 internal medicine physician records in Texas
Megan McCain Maddox, 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 2013, is newer than 66% of them.
- NPI issued2013 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2013 · median 2004 among the 6,088 with a school on file
- Record last updated2024 · 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).
1,488 internal medicine physician records list a practice address in Houston
They are 1,488 of the 61,221 NPPES records with a practice address in Houston, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Houston → Internal Medicine Physician nationwide →
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- Fawzia Javed, MDHouston, TX 770251831120518
- Tony Lin, MDHouston, TX 770251689760969
- Trela Parker, MDHouston, TX 770251598851875
Common questions
What is Megan McCain Maddox, M.D.'s NPI number?
Megan McCain Maddox, M.D.'s National Provider Identifier (NPI) is 1720422884, issued on Apr 19, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Megan McCain Maddox, M.D. located?
The NPPES record lists a practice address at 4191 Bellaire Blvd Ste 250, Houston, TX, 77025. Phone: (346) 356-7000. Providers update this record themselves, so call before visiting.
How can I verify Megan McCain Maddox, M.D.'s license?
NPPES lists Texas license number Q9190, 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 Megan McCain Maddox, M.D. prescribe under Medicare Part D?
In 2024, Megan McCain Maddox, M.D. had 5,480 Medicare Part D claims for 417 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.