John Elias Marcellus, M.D.
Psychiatry Physician · Houston, TX
John Elias Marcellus, M.D. is a psychiatry physician with a practice address in Houston, Texas, and NPI 1972647352, issued on Feb 18, 2007. Check the license (Texas J4325, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Elias Marcellus
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- J4325 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4888 Loop Central Dr, Houston, TX 77081
- Phone
- (713) 346-1542
- Enumerated
- Feb 18, 2007
- Record last updated
- Jul 20, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (713) 346-1577
- Medicare enrollment
- Enrolled (PECOS I20040129001216); accepts Medicare assignment
- Medical or professional school
- University Of Mississippi School Of Medicine, 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 3,318 in Texas → Look up another NPI →
Also registered at 4888 Loop Central Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melissa Davis, SLPSpeech-Language Pathologist1639394547
- Jennifer De La Cruz (noonan)Physical Therapist1144733411
- Tanya Doss, LPTPhysical Therapist1356566277
- Stella Edmondson, LCSWClinical Social Worker1649341751
- Nelson Fernandez, M.D.Pulmonary Disease Physician1881675122
- Nilgun Giray Bellezza, M.D.Psychiatry Physician1588740047
Verify John Elias Marcellus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license J4325Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% more Medicare Part D claims than the average psychiatry physician in 2024
1,777 Medicare Part D claims for 87 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Bupropion Xl95 claims
- Alprazolam71 claims
- Trazodone Hcl68 claims
- Sertraline Hcl67 claims
- Dextroamphetamine-Amphetamine64 claims
- Gabapentin52 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: $2,007.33
97 payments; by number, the most common kind was food and beverage; the largest payer was Iti, Inc. (d/b/a Intra-Cellular Therapies, Inc.). The 13,693 providers of this specialty with any payment received $4,954.93 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.
John Elias Marcellus among 3,318 psychiatry physician records in Texas
John Elias Marcellus, M.D. is one of 3,318 psychiatry physician records with a practice address in Texas. 72% 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 35% of them.
- NPI issued2007 · 35% of these records are older, 51% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated1992 · median 2006 among the 1,481 with a school on file
- Record last updated2010 · 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 2084P0800X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Texas
There are 3,318 psychiatry physician records in Texas.
All 3,318 in Texas → Every provider in Houston → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Jose Bejarano, M.D.Houston, TX 770811164729091
- Eric Chen, MDHouston, TX 770811508482472
- Nilgun Giray Bellezza, M.D.Houston, TX 770811588740047
- Shaojie Han, M.D.Houston, TX 770811073811832
- Karen Hughes, DOHouston, TX 770811770726309
- Mark Jacobs, M.D.Houston, TX 770811295737617
- Natalia Kazakevich, M.DHouston, TX 770811447570999
- Riaz Mazcuri, M.D.Houston, TX 770811801885306
Common questions
What is John Elias Marcellus, M.D.'s NPI number?
John Elias Marcellus, M.D.'s National Provider Identifier (NPI) is 1972647352, issued on Feb 18, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Elias Marcellus, M.D. located?
The NPPES record lists a practice address at 4888 Loop Central Dr, Houston, TX, 77081. Phone: (713) 346-1542. Providers update this record themselves, so call before visiting.
How can I verify John Elias Marcellus, M.D.'s license?
NPPES lists Texas license number J4325, 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 John Elias Marcellus, M.D. prescribe under Medicare Part D?
In 2024, John Elias Marcellus, M.D. had 1,777 Medicare Part D claims for 87 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.