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DR. MARY CATHARINE MAXIAN M.D.
NPI 1659535698
Anesthesiology in Houston, TX

Active since July 17, 2008PECOS EnrolledAccepts Medicare Assignment
6720 BERTNER AVE, HOUSTON, TX 77030(832) 355-2666 Get Directions Write a Review

NPPES record last updated: March 19, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 19, 2026, May 9, 2024 (2 updates tracked since 2024).

About Dr. Mary Catharine Maxian M.d. NPPES

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

DR. MARY CATHARINE MAXIAN M.D. (NPI 1659535698) is an individual anesthesiology provider in Houston, Texas, licensed in Texas (N8218) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS, is affiliated with Ad Hospital East, Llc, and maintains a secondary practice location in Alvin.

NPPES Registry Identity

NPI1659535698
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameDR. MARY CATHARINE MAXIANCredential: M.D.
Location Address6720 BERTNER AVEHouston, TX 77030-2604
Mailing Address4501 Wickwillow LnAlvin, TX 77511-7677 · (713) 876-2966
Phone(832) 355-2666
Sole ProprietorNo
Medical School CMSBaylor College Of MedicineGraduated 2005
Enumeration DateJuly 17, 2008
Last NPPES UpdateMarch 19, 20262 updates tracked since enumeration
NPPES CertifiedMarch 19, 2026
✔ NPI 1659535698 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in TX · N8218
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License N8218 (TX)
6720 BERTNER AVE, Houston, TX 77030
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Secondary Practice Location 1

Location 14501 Wickwillow LnAlvin, TX 77511-7677 · Phone (713) 876-2296

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mary Catharine Maxian 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 ID345426607
PECOS Enrollment IDI20110520000578
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.

Medicare Billing Reassignments

6

Medicare enrollment records show Mary Maxian reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Baylor College Of Medicine
0.8 mi
Medical Genetics, Ph.D. Medical Genetics
7200 CAMBRIDGE ST FL 10
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • 2,554 clinicians in this Medicare group
NPI 1881026664 (713) 798-0000
Dynamic Anesthesia Providers PLLC
9.6 mi
Anesthesiology
510 W TIDWELL RD
Houston, TX 77091
  • Reassigned Medicare billing, Texas enrollment
  • 319 clinicians in this Medicare group
NPI 1346752326 (832) 465-3514
Northwest Anesthesiology & Pain Services, P.A.
20 mi
Anesthesiology
7010 CHAMPIONS PLAZA DR STE 400
Houston, TX 77069
  • Reassigned Medicare billing, Texas enrollment
  • 260 clinicians in this Medicare group
NPI 1629027511 (832) 698-5331
Compass Anesthesia Providers PLLC
20 mi
Anesthesiology
333 N TEXAS AVE
Webster, TX 77598
  • Reassigned Medicare billing, Texas enrollment
  • 403 clinicians in this Medicare group
NPI 1669829750 (281) 335-1700
Texans Anesthesia Associates PLLC
20 mi
Anesthesiology
333 N TEXAS AVE STE 1000
Webster, TX 77598
  • Reassigned Medicare billing, Texas enrollment
  • 543 clinicians in this Medicare group
NPI 1275733982 (713) 400-2990
Apex Frontier Group, PLLC
21 mi
Anesthesiology
16750 RED OAK DR
Houston, TX 77090
  • Reassigned Medicare billing, Texas enrollment
  • 98 clinicians in this Medicare group
NPI 1417808627 (281) 453-7110

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

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.

Anesthesia for injection, drainage or aspiration procedures on spine or spinal cord of lower back accessed through skin using imaging guidance 01938
This procedure involves using anesthesia to numb your lower back for certain procedures like injections, drainage, or aspiration on your spine or spinal cord. Imaging guidance is used to accurately locate the area to be treated, ensuring precision and safety.
25 services25 patients
Anesthesia for injection, drainage or aspiration procedures on spine or spinal cord of lower back accessed through skin using imaging guidance 01938
This procedure involves using anesthesia to numb your lower back for certain procedures like injections, drainage, or aspiration on your spine or spinal cord. Imaging guidance is used to accurately locate the area to be treated, ensuring precision and safety.
17 services17 patients

Hospital Affiliations CMS Care Compare 4

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

Ad Hospital East, LLC

Acute Care Hospitals · Houston, TX
OwnershipProprietary
CMS Certification Number670102
Location12950 East Freeway, Suite 100Houston, TX 77015 · Harris County
Emergency services

Altus Baytown Hospital

Acute Care Hospitals · Baytown, TX
OwnershipPhysician
CMS Certification Number670109
Location1626 W Baker RoadBaytown, TX 77521 · Harris County
Emergency services

Townsen Memorial Hospital

Acute Care Hospitals · Humble, TX
OwnershipVoluntary non-profit - Private
CMS Certification Number670266
Location1475 Fm 1960 Bypass EHumble, TX 77338 · Harris County

East Houston Medical Center

Acute Care Hospitals · Houston, TX
OwnershipProprietary
CMS Certification Number670320
Location15149 Wallisville RoadHouston, TX 77049 · Harris County
Emergency services

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ARCHANA VARGHEESE RAGHAVAN M.D.
Anesthesiology
6720 BERTNER AVE
HOUSTON, TX 77030
Harris County (832) 355-2666
NEAL SAVJANI M.D.
Radiology (Vascular & Interventional Radiology)
6720 BERTNER AVE
HOUSTON, TX 77030
Harris County (713) 798-1000
DR. BRIAN S CHINAI DO
Internal Medicine (Critical Care Medicine)
6720 BERTNER AVE
HOUSTON, TX 77030
Harris County (832) 355-2666
MIR TAJAMMUL HUSSAIN MD
Anesthesiology
6720 BERTNER AVE
HOUSTON, TX 77030
Harris County (832) 355-2666
DR. ALIREZA PARHIZGAR M.D.
Internal Medicine
6720 BERTNER AVE
HOUSTON, TX 77030
Harris County (713) 798-2222
NEKIA MARIE STEWART CRNA
Nurse Anesthetist, Certified Registered
6720 BERTNER AVE
HOUSTON, TX 77030
Harris County (832) 355-2666
CAITLYN MARIE KOHAKE
Anesthesiologist Assistant
6720 BERTNER AVE
HOUSTON, TX 77030
Harris County (823) 355-2666
XOCHITL B. SANCHEZ M.D.
Anesthesiology
6720 BERTNER AVE
HOUSTON, TX 77030
Harris County (713) 798-1750

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 Mary Maxian's NPI number?

The NPI number for Mary Maxian is 1659535698. It was assigned to this individual provider in the NPPES registry on July 17, 2008.

Where is Mary Maxian located?

Mary Maxian practices at 6720 Bertner Ave, Houston, TX 77030. The listed phone number is (832) 355-2666.

What is Mary Maxian's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Mary Maxian enrolled in Medicare?

Yes. Mary Maxian 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.

Which organizations bill Medicare for Mary Maxian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Maxian reassigns Medicare benefits to 6 organizations: Baylor College Of Medicine (Houston, TX), Dynamic Anesthesia Providers PLLC (Houston, TX), Northwest Anesthesiology & Pain Services, P.A. (Houston, TX), Compass Anesthesia Providers PLLC (Webster, TX), Texans Anesthesia Associates PLLC (Webster, TX) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Maxian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Maxian accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 3 other insurers list Mary Maxian 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 Mary Maxian affiliated with any hospitals?

According to CMS data, Mary Maxian is affiliated with Ad Hospital East, LLC, Altus Baytown Hospital, Townsen Memorial Hospital and East Houston Medical Center.

When was this NPI record last updated?

The NPPES record for Mary Maxian was last updated on March 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.