Marissa Y. Gulbis, PA-C
Physician Assistant · San Antonio, TX
Marissa Y. Gulbis, PA-C is a physician assistant with a practice address in San Antonio, Texas, and NPI 1881129658, issued on Apr 28, 2017. Check the license (Texas PA11262, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marissa Y. Gulbis
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA11262 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4502 Medical Dr FL 2, San Antonio, TX 78229
- Phone
- (210) 358-8555
- Enumerated
- Apr 28, 2017
- Record last updated
- May 9, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (210) 358-8576
- Medicaid ID
- 381855101 TX
- Medicare enrollment
- Enrolled (PECOS I20171004003273); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 2016
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 10,999 in Texas → Look up another NPI →
Also registered at 4502 Medical Dr FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marissa Y. Gulbis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license PA11262Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average physician assistant in 2024
148 Medicare Part D claims for 68 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Gabapentin21 claims
- Levetiracetam16 claims
- Acetaminophen-Codeine13 claims
- Methocarbamol12 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: $139.43
1 payment: food and beverage; the largest payer was SI-Bone, Inc. The 64,719 providers of this specialty with any payment received $841.65 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
- University OF Texas Health Science Center AT San AntonioSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa Y. Gulbis among 10,999 physician assistant records in Texas
Marissa Y. Gulbis, PA-C is one of 10,999 physician assistant records with a practice address in Texas. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 52% of them.
- NPI issued2017 · 52% of these records are older, 45% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated2016 · median 2017 among the 6,096 with a school on file
- Record last updated2018 · 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 363A00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
873 physician assistant records list a practice address in San Antonio
They are 873 of the 37,749 NPPES records with a practice address in San Antonio, and 10,999 physician assistant records in Texas.
All 10,999 in Texas → Every provider in San Antonio → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Christa Black, PA-CSan Antonio, TX 782291033177837
- Leticia Bland, PA-CSan Antonio, TX 782291659356178
- Karen Burchell, PA-CSan Antonio, TX 782291992772503
- John Curran, PASan Antonio, TX 782291174583892
- Sara Dungan, PA-CSan Antonio, TX 782291518917319
- Melinda Ellis, PA-CSan Antonio, TX 782291710954581
- Stanley Oatman, P.A-CSan Antonio, TX 782291215982434
- Stephanie Philipp, PACSan Antonio, TX 782291881662757
Common questions
What is Marissa Y. Gulbis, PA-C's NPI number?
Marissa Y. Gulbis, PA-C's National Provider Identifier (NPI) is 1881129658, issued on Apr 28, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Y. Gulbis, PA-C located?
The NPPES record lists a practice address at 4502 Medical Dr FL 2, San Antonio, TX, 78229. Phone: (210) 358-8555. Providers update this record themselves, so call before visiting.
How can I verify Marissa Y. Gulbis, PA-C's license?
NPPES lists Texas license number PA11262, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Marissa Y. Gulbis, PA-C prescribe under Medicare Part D?
In 2024, Marissa Y. Gulbis, PA-C had 148 Medicare Part D claims for 68 beneficiaries; the average among physician assistant prescribers was 830. 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.