1. Home
  2. Directory
  3. Texas
  4. Houston
  5. Psychiatry Neurology
  6. NPI Profile

MARIA VIRGINIA DIAZ M.D
NPI 1356791693
Psychiatry & Neurology - Neurology in Houston, TX

Active since June 17, 2016PECOS EnrolledAccepts Medicare Assignment
6431 FANNIN ST STE JJL S-85, HOUSTON, TX 77030(713) 500-5154 Get Directions Write a Review

NPPES record last updated: May 26, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 26, 2021, Jun 10, 2020, Jun 17, 2016 (3 updates tracked since 2016).

About Maria Virginia Diaz M.d NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARIA VIRGINIA DIAZ M.D (NPI 1356791693) is an individual neurology provider in Houston, Texas, licensed in Pennsylvania (MD473227) and active in the NPI registry since June 2016. She is enrolled in Medicare PECOS, is affiliated with Albert Einstein Medical Center, and is a graduate of Other (2012).

NPPES Registry Identity

NPI1356791693
Entity TypeIndividualFemale
Primary Taxonomy2084N0400X
Provider Legal NameMARIA VIRGINIA DIAZCredential: M.D
Location Address6431 FANNIN ST STE JJL S-85Houston, TX 77030-1501
Mailing Address6431 Fannin St Ste Jjl S-85Houston, TX 77030-1501 · (713) 500-5154
Phone(713) 500-5154
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateJune 17, 2016
Last NPPES UpdateMay 26, 20213 updates tracked since enumeration
NPPES CertifiedMay 26, 2021
✔ NPI 1356791693 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in PA · MD473227
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License MT211622 (FL)
6431 FANNIN ST STE JJL S-85, Houston, TX 77030
Open in Google Maps ↗

Other Names 1

Other Name (5)Maria Virginia Diaz Rojas

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Maria Virginia Diaz M.d is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4880093491
PECOS Enrollment IDI20210602001994
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
127 services55 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
84 services40 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
51 services28 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
17 services16 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
14 services13 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Albert Einstein Medical Center

Acute Care Hospitals · Philadelphia, PA
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number390142
Location5501 Old York RoadPhiladelphia, PA 19141 · Philadelphia County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77030 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.06 typical visit price
range $58.24 – $176.98
Typical copayment $33.51 (range $14.56 – $44.24)
Most-billed visit code 99204
Established Patient
$102.71 typical visit price
range $18.60 – $143.93
Typical copayment $25.67 (range $4.65 – $35.98)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Maria Diaz's NPI number?

The NPI number for Maria Diaz is 1356791693. It was assigned to this individual provider in the NPPES registry on June 17, 2016. The provider is also known as Maria Virginia Diaz Rojas.

Where is Maria Diaz located?

Maria Diaz practices at 6431 Fannin St Ste Jjl S-85, Houston, TX 77030. The listed phone number is (713) 500-5154.

What is Maria Diaz's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Maria Diaz enrolled in Medicare?

Yes. Maria Diaz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Maria Diaz accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Maria Diaz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Maria Diaz affiliated with any hospitals?

According to CMS data, Maria Diaz is affiliated with Albert Einstein Medical Center.

When was this NPI record last updated?

The NPPES record for Maria Diaz was last updated on May 26, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.