MR. STEPHEN MICHAEL MEHALLOW CRNA
NPI 1720659071
Nurse Anesthetist, Certified Registered in San Antonio, TX

Active since July 08, 2021Accepts Medicare Assignment
4502 MEDICAL DR, SAN ANTONIO, TX 78229(201) 358-4000 Get Directions Write a Review

NPPES record last updated: July 22, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 22, 2024, Jan 2, 2023, Sep 1, 2022 and 2 more (5 updates tracked since 2021).

About Mr. Stephen Michael Mehallow Crna NPPES

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

MR. STEPHEN MICHAEL MEHALLOW CRNA (NPI 1720659071) is an individual nurse anesthetist, certified registered in San Antonio, Texas, licensed in Texas (1071183) and active in the NPI registry since July 2021. He maintains a secondary practice location in Fort Sam Houston and is a graduate of Other (2021).

NPPES Registry Identity

NPI1720659071
Entity TypeIndividualMale
Primary Taxonomy367500000X
Provider Legal NameMR. STEPHEN MICHAEL MEHALLOWCredential: CRNA
Location Address4502 MEDICAL DRSan Antonio, TX 78229-4402
Mailing Address903 W Martin St # Ms 49-2San Antonio, TX 78207-0903 · (201) 358-0572 · Fax (210) 358-5940
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateJuly 8, 2021
Last NPPES UpdateJuly 22, 20245 updates tracked since enumeration
NPPES CertifiedJuly 22, 2024
✔ NPI 1720659071 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367500000X
Licenses✔ Licensed in TX · 1071183✔ Licensed in GA · RN293786
Definition
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.
4502 MEDICAL DR, San Antonio, TX 78229

Secondary Practice Location 1

Location 13551 Roger Brooke DrFort Sam Houston, TX 78234-4504 · Phone (518) 253-4943

Accepted 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

Mr. Stephen Michael Mehallow Crna 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 ID8628450921
PECOS Enrollment IDI20220803001889, I20240930001781

Medicare Billing Reassignments

8

Medicare enrollment records show Stephen Mehallow reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Family Medicine
903 W MARTIN ST # MS 49-2
San Antonio, TX 78207
  • Reassigned Medicare billing, Texas enrollment
  • 1,129 clinicians in this Medicare group
Anesthesiology
19802 MESSINA
San Antonio, TX 78258
  • Reassigned Medicare billing, Texas enrollment
  • 144 clinicians in this Medicare group
Anesthesiology
8140 N MOPAC EXPY STE 3-210
Austin, TX 78759
  • Reassigned Medicare billing, Texas enrollment
  • 840 clinicians in this Medicare group
Anesthesiology
4100 INTERNATIONAL PLZ STE 800
Fort Worth, TX 76109
  • Reassigned Medicare billing, Texas enrollment
  • 1,612 clinicians in this Medicare group
Nurse Anesthetist, Certified Registered
1100 ANDRE ST, SUITE 300
New Iberia, LA 70563
  • Reassigned Medicare billing, Texas enrollment
  • 282 clinicians in this Medicare group
Anesthesiology
225 GREENFIELD PKWY STE 105
Liverpool, NY 13088
  • Reassigned Medicare billing, New York enrollment
  • 30 clinicians in this Medicare group
Gastroenterology
5112 W TAFT RD, SUITE H
Liverpool, NY 13088
  • Reassigned Medicare billing, New York enrollment
  • 50 clinicians in this Medicare group
Anesthesiology
5000 CAMPUSWOOD DR STE 100
East Syracuse, NY 13057
  • Reassigned Medicare billing, New York enrollment
  • 84 clinicians in this Medicare group

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 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
$126.40 typical visit price
range $54.84 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$68.55 typical visit price
range $17.52 – $136.11
Typical copayment $17.13 (range $4.38 – $34.02)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Internal Medicine (Cardiovascular Disease)
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Student in an Organized Health Care Education/Training Program
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Student in an Organized Health Care Education/Training Program
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Physical Therapy Assistant
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Pharmacist
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Hospitalist
4502 MEDICAL DR
SAN ANTONIO, TX 78229

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 Stephen Mehallow's NPI number?

The NPI number for Stephen Mehallow is 1720659071. It was assigned to this individual provider in the NPPES registry on July 8, 2021.

Where is Stephen Mehallow located?

Stephen Mehallow practices at 4502 Medical Dr, San Antonio, TX 78229. The listed phone number is (201) 358-4000.

What is Stephen Mehallow's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Stephen Mehallow enrolled in Medicare?

Yes. Stephen Mehallow 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 Stephen Mehallow's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Mehallow reassigns Medicare benefits to 8 organizations: Community Medicine Associates (San Antonio, TX), Lone Star Anesthesia Partners PLLC (San Antonio, TX), Austin Anesthesiology Group, PLLC (Austin, TX), Emergenchealth PLLC (Fort Worth, TX), Youngs Professional Services LLC (New Iberia, LA) and 3 more organizations, 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 Stephen Mehallow's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Stephen Mehallow accept?

Health plans from Blue Cross and Blue Shield of Texas and CHRISTUS Health Plan list Stephen Mehallow 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.

When was this NPI record last updated?

The NPPES record for Stephen Mehallow was last updated on July 22, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.