Ruby Samuel John, MD
Internal Medicine Physician · The Woodlands, TX
Ruby Samuel John, MD is an internal medicine physician with a practice address in The Woodlands, Texas, and NPI 1629224118, issued on Aug 15, 2008. Check the license (Texas P1334, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ruby Samuel John
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- P1334 TX
Self-reported in NPPES; status is on the state search - Practice location
- 10020 Research Forest Dr, The Woodlands, TX 77354
- Phone
- (281) 356-1945
- Enumerated
- Aug 15, 2008
- Record last updated
- Jul 28, 2025
- Fax
- (281) 356-1978
- Medicare enrollment
- Enrolled (PECOS I20211202000074); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 10020 Research Forest Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ruby Samuel John in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P1334Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,508 Medicare Part D claims for 183 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium125 claims
- Losartan Potassium111 claims
- Atorvastatin Calcium103 claims
- Rosuvastatin Calcium78 claims
- Amlodipine Besylate76 claims
- Escitalopram Oxalate67 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: $583.40
29 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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
- Westwood Primary Care, PLLCThe Woodlands, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ruby Samuel John among 9,175 internal medicine physician records in Texas
Ruby Samuel John, MD 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 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2005 · median 2004 among the 6,088 with a school on file
- Record last updated2025 · 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).
32 internal medicine physician records list a practice address in The Woodlands
They are 32 of the 2,254 NPPES records with a practice address in The Woodlands, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in The Woodlands → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Hunaid Dollar, MDMagnolia, TX 773541487760229
- Justin Hogan, M.D.Magnolia, TX 773541104243120
- Gurunath Subrahmanyam, MDMagnolia, TX 773541295311926
- Allison Walworth, DOMagnolia, TX 773541669094678
- John Carwile, MDMontgomery, TX 773561487697686
- Gary Sharpless, MDMontgomery, TX 773561982792883
- Richard Avery, DOLivingston, TX 773511023073822
- Elias Kanaan, MDLivingston, TX 773511639175797
Common questions
What is Ruby Samuel John, MD's NPI number?
Ruby Samuel John, MD's National Provider Identifier (NPI) is 1629224118, issued on Aug 15, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ruby Samuel John, MD located?
The NPPES record lists a practice address at 10020 Research Forest Dr, The Woodlands, TX, 77354. Phone: (281) 356-1945. Providers update this record themselves, so call before visiting.
How can I verify Ruby Samuel John, MD's license?
NPPES lists Texas license number P1334, 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 Ruby Samuel John, MD prescribe under Medicare Part D?
In 2024, Ruby Samuel John, MD had 2,508 Medicare Part D claims for 183 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.