ALVIN MICHAEL SHIH D.O.
NPI 1689052037
Internal Medicine in San Antonio, TX

Q: What is Alvin Shih's NPI number?

The NPI number for Alvin Shih is 1689052037. It was assigned to this individual provider in the NPPES registry on May 18, 2015.

Q: What is Alvin Shih's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Alvin Shih was last updated on April 2, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.

Active since May 18, 2015PECOS EnrolledAccepts Medicare Assignment

1139 E SONTERRA BLVD, SAN ANTONIO, TX 78258(210) 638-2000 Get Directions Write a Review

NPPES record last updated: April 2, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Alvin Michael Shih D.o. NPPES

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

ALVIN MICHAEL SHIH D.O. (NPI 1689052037) is an individual internal medicine provider in San Antonio, Texas, licensed in Texas (R7327) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS, is affiliated with Peterson Regional Medical Center, and is a graduate of Other (2015).

NPPES Registry Identity

NPI1689052037

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameALVIN MICHAEL SHIHCredential: D.O.

Location Address1139 E SONTERRA BLVDSan Antonio, TX 78258-4347

Mailing Address1234 Evans Rd Apt 3024San Antonio, TX 78258-7025 · (832) 818-1568

Phone(210) 638-2000

Sole ProprietorNo

Medical School CMSOtherGraduated 2015

Enumeration DateMay 18, 2015

Last NPPES UpdateApril 2, 2019

✔ NPI 1689052037 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in TX · R7327

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1139 E SONTERRA BLVD, San Antonio, TX 78258

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, UnitedHealthcare.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

Alvin Michael Shih D.o. 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 ID6204135981

PECOS Enrollment IDI20181203001681

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

Medicare enrollment records show Alvin Shih reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hospital Medicine Services Of Tx, PLLC

9.4 mi

Hospitalist

7700 FLOYD CURL DR
San Antonio, TX 78229

Reassigned Medicare billing, Texas enrollment
681 clinicians in this Medicare group

NPI 1881392363 (210) 575-4000

Hospitalist Medicine Physicians Of Texas, PLLC

194 mi

Internal Medicine

18951 N MEMORIAL DR
Humble, TX 77338

Reassigned Medicare billing, Texas enrollment
2,009 clinicians in this Medicare group

NPI 1629307095 (281) 540-7700

Cogent Healthcare Of Texas, PA

247 mi

Internal Medicine

8200 WALNUT HILL LN
Dallas, TX 75231

Reassigned Medicare billing, Texas enrollment
1,208 clinicians in this Medicare group

NPI 1992722953 (214) 345-7585

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 4

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.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

313 services304 patients

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.

35 services35 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

13 services13 patients

Initial hospital care with same-day admission and discharge with high level of medical decision making, per day, if using time, at least 85 minutes 99236

This service involves a brief hospital stay for a serious health issue. Patients are admitted and discharged on the same day, typically within 55 minutes. It allows for close monitoring and immediate treatment, ensuring optimal care.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Peterson Regional Medical Center

Acute Care Hospitals · Kerrville, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450007

Location551 Hill Country DriveKerrville, TX 78028 · Kerr County

Emergency services Birthing friendly

Guadalupe Regional Medical Center

Acute Care Hospitals · Seguin, TX

3/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number450104

Location1215 E Court StSeguin, TX 78155 · Guadalupe County

Emergency services Birthing friendly

Methodist Hospital

Acute Care Hospitals · San Antonio, TX

4/5 CMS rating

OwnershipProprietary

CMS Certification Number450388

Location7700 Floyd Curl DrSan Antonio, TX 78229 · Bexar County

Emergency services Birthing friendly

Methodist Hospital Stone Oak

Acute Care Hospitals · San Antonio, TX

4/5 CMS rating

OwnershipProprietary

CMS Certification Number670055

Location1139 E Sonterra Blvd,San Antonio, TX 78258 · Bexar County

Emergency services Birthing friendly

Baptist Neighborhood Hospital Thousand Oaks

Acute Care Hospitals · San Antonio, TX

4/5 CMS rating

OwnershipProprietary

CMS Certification Number670078

Location16088 San PedroSan Antonio, TX 78232 · Bexar County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78258 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

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

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.

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.

METHODIST HEALTHCARE SYSTEM OF SAN ANTONIO, LTD., L.L.P.

Rehabilitation Unit

1139 E SONTERRA BLVD
SAN ANTONIO, TX 78258

Bexar County (210) 638-2100

KHUSRAV MIROV AGACNP

Nurse Practitioner (Acute Care)

1139 E SONTERRA BLVD
SAN ANTONIO, TX 78258

Bexar County (210) 576-5401

TIMOTHY RYAN LENO

Physical Therapist

1139 E SONTERRA BLVD
SAN ANTONIO, TX 78258

Bexar County (210) 638-2000

DR. STEVEN KNOTT PHARM.D.

Pharmacist (Geriatric)

1139 E SONTERRA BLVD
SAN ANTONIO, TX 78258

Bexar County (210) 638-2100

DR. HARRISON WONHEE YOO M.D.

Internal Medicine

1139 E SONTERRA BLVD, SUITE #405
SAN ANTONIO, TX 78258

Bexar County (210) 404-0000

MATTHEW MICHAEL DWYER M.D.

Orthopaedic Surgery

1139 E SONTERRA BLVD, SUITE 500
SAN ANTONIO, TX 78258

Bexar County (210) 545-7171

ORTHOPEDIC PERFORMANCE INSTITUTE

Orthopaedic Surgery

1139 E SONTERRA BLVD, STE 500
SAN ANTONIO, TX 78258

Bexar County (210) 710-9509

NATHAN GAY AGACNP

Nurse Practitioner (Acute Care)

1139 E SONTERRA BLVD
SAN ANTONIO, TX 78258

Bexar County (210) 638-2000

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 Alvin Shih's NPI number?

The NPI number for Alvin Shih is 1689052037. It was assigned to this individual provider in the NPPES registry on May 18, 2015.

Where is Alvin Shih located?

Alvin Shih practices at 1139 E Sonterra Blvd, San Antonio, TX 78258. The listed phone number is (210) 638-2000.

What is Alvin Shih's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Alvin Shih enrolled in Medicare?

Yes. Alvin Shih 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 Alvin Shih's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alvin Shih reassigns Medicare benefits to 3 organizations: Hospital Medicine Services Of Tx, PLLC (San Antonio, TX), Hospitalist Medicine Physicians Of Texas, PLLC (Humble, TX) and Cogent Healthcare Of Texas, PA (Dallas, TX). 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 Alvin Shih's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alvin Shih accept?

Health plans from Blue Cross and Blue Shield of Texas and UnitedHealthcare list Alvin Shih 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 Alvin Shih affiliated with any hospitals?

According to CMS data, Alvin Shih is affiliated with Peterson Regional Medical Center, Guadalupe Regional Medical Center, Methodist Hospital, Methodist Hospital Stone Oak and Baptist Neighborhood Hospital Thousand Oaks.

When was this NPI record last updated?

The NPPES record for Alvin Shih was last updated on April 2, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.