Nathaniel Conley Cassell, M.D.
Critical Care Medicine (Internal Medicine) Physician · The Woodlands, TX
Nathaniel Conley Cassell, M.D. is a critical care medicine (internal medicine) physician with a practice address in The Woodlands, Texas, and NPI 1518302470, issued on May 6, 2013. Check the license (Texas Q7844, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nathaniel Conley Cassell
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- Q7844 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1111 Medical Plaza Dr Ste 250, The Woodlands, TX 77380
- Phone
- (281) 296-8788
- Enumerated
- May 6, 2013
- Record last updated
- Dec 31, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (281) 465-4569
- Medicare enrollment
- Enrolled (PECOS I20170908000315); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 413 in Texas → Look up another NPI →
Also registered at 1111 Medical Plaza Dr Ste 250
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charlie Burt, AGACNP-BCAcute Care Nurse Practitioner1790242659
- Natalie Comiskey, APRNAcute Care Nurse Practitioner1336772185
- Holly Davis, APRN, AGACNP-BCCritical Care Medicine Nurse Practitioner1588375042
- Brianna De Ruyter, AGACNP-BCAcute Care Nurse Practitioner1861150666
- Danika Fredieu, AGACNP-BCAcute Care Nurse Practitioner1902324718
- Yassmiri Jewell, NPGerontology Nurse Practitioner1922651546
Verify Nathaniel Conley Cassell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license Q7844Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Q-Health Partners PLLCHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathaniel Conley Cassell among 413 critical care medicine (internal medicine) physician records in Texas
Nathaniel Conley Cassell, M.D. is one of 413 critical care medicine (internal medicine) physician records with a practice address in Texas. 90% 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, 29% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2013 · median 2007 among the 346 with a school on file
- Record last updated2019 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Texas
There are 413 critical care medicine (internal medicine) physician records in Texas.
All 413 in Texas → Every provider in The Woodlands → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Daniel Kievlan, M.D.The Woodlands, TX 773801003131616
- Zoulficar Kobeissi, MDThe Woodlands, TX 773801801864905
- Andres Reyes, M.D.The Woodlands, TX 773801124312905
- Haitham Shaheen, MDThe Woodlands, TX 773801467764050
- Shivaramaiah Shashikumar, MDThe Woodlands, TX 773801336113851
- Shahid Husain, M.DBellaire, TX 774011346377215
- Akinyinka Ajelabi, MDKingwood, TX 773391841227808
- Angeli Patel, MDKingwood, TX 773391588398861
Common questions
What is Nathaniel Conley Cassell, M.D.'s NPI number?
Nathaniel Conley Cassell, M.D.'s National Provider Identifier (NPI) is 1518302470, issued on May 6, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Nathaniel Conley Cassell, M.D. located?
The NPPES record lists a practice address at 1111 Medical Plaza Dr Ste 250, The Woodlands, TX, 77380. Phone: (281) 296-8788. Providers update this record themselves, so call before visiting.
How can I verify Nathaniel Conley Cassell, M.D.'s license?
NPPES lists Texas license number Q7844, 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.
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.