DR. ALEXANDER SAI-CHAK HO M.D.
NPI 1629251566
Radiology - Diagnostic Radiology in Fontana, CA

Q: What is Alexander Ho's NPI number?

The NPI number for Alexander Ho is 1629251566. It was assigned to this individual provider in the NPPES registry on December 13, 2007.

Q: What is Alexander Ho's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: When was this NPI record last updated?

The NPPES record for Alexander Ho was last updated on April 1, 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.

Active since December 13, 2007PECOS EnrolledAccepts Medicare Assignment

9961 SIERRA AVE, MOB3, BASEMENT, FONTANA, CA 92335(909) 427-3562 Get Directions Write a Review

NPPES record last updated: April 1, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Apr 1, 2026, Nov 29, 2021, Feb 26, 2016 (3 updates tracked since 2016).

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About Dr. Alexander Sai-chak Ho M.d. NPPES

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

DR. ALEXANDER SAI-CHAK HO M.D. (NPI 1629251566) is an individual diagnostic radiology provider in Fontana, California, licensed in Texas (U8344) and active in the NPI registry since December 2007. He is enrolled in Medicare PECOS, is affiliated with Baptist Medical Center, and is a graduate of University Of California, San Diego School Of Medicine (2006).

NPPES Registry Identity

NPI1629251566

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. ALEXANDER SAI-CHAK HOCredential: M.D.

Location Address9961 SIERRA AVE, MOB3, BASEMENTFontana, CA 92335-6720

Mailing Address9961 Sierra Ave, Mob3, BasementFontana, CA 92335-6720

Phone(909) 427-3562

Sole ProprietorNo

Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 2006

Enumeration DateDecember 13, 2007

Last NPPES UpdateApril 1, 20263 updates tracked since enumeration

NPPES CertifiedApril 1, 2026

✔ NPI 1629251566 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in TX · U8344✔ Licensed in CA · A114491

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

9961 SIERRA AVE, Fontana, CA 92335

Open in Google Maps ↗

Other Identifiers 2

Other036138037IL · Illinois Department Of Financial & Professional Regulation

OtherA114491CA · Medical Licence

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Moda Health Plan, Inc. 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. Alexander Sai-chak Ho 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 ID1052599958

PECOS Enrollment IDI20240315002923, I20250424002733

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 Alexander Ho reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Southern California Permanente Medical Group

27 mi

Health Maintenance Organization

441 N LAKEVIEW AVE
Anaheim, CA 92807

Reassigned Medicare billing, California enrollment
13,921 clinicians in this Medicare group

NPI 1952333460 (714) 279-4000

Vhs San Antonio Imaging Partners, LP

1,158 mi

Diagnostic Radiology

215 E QUINCY STREET, SUITE 100
San Antonio, TX 78215

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

NPI 1457350993 (210) 351-0784

M & s Radiology Associates, PA

1,159 mi

Specialist

8715 VILLAGE DR STE 320
San Antonio, TX 78217

Reassigned Medicare billing, Illinois enrollment

NPI 1265423693 (210) 858-8019

Radiology Imaging Corpus Christi, PLLC

1,265 mi

Diagnostic Radiology

3226 S ALAMEDA ST
Corpus Christi, TX 78404

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

NPI 1194469221 (361) 888-6684

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 20

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.

X-ray of chest, 1 view 71045

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

214 services208 patients

Ct scan of abdomen and pelvis with contrast 74177

A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.

73 services73 patients

Ct scan head or brain without contrast 70450

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

70 services70 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

58 services58 patients

Ct scan of abdomen and pelvis without contrast 74176

A CT scan of the abdomen and pelvis is a non-invasive medical test. It uses special X-ray equipment to create detailed images of your abdominal and pelvic areas. This helps doctors examine organs, tissues, and vessels. No contrast dye is used in this procedure.

48 services48 patients

Ct scan of chest without contrast 71250

A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.

31 services31 patients

Ct scan of upper spine without contrast 72125

A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.

26 services26 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

26 services25 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

23 services23 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

21 services21 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

21 services21 patients

Ct scan of blood vessels of chest with contrast 71275

A CT scan of the chest with contrast is a non-invasive imaging test. It uses X-rays and a special dye to get detailed images of your blood vessels in the chest. This helps in diagnosing conditions related to heart and lungs.

20 services20 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

18 services18 patients

X-ray of foot, minimum of 3 views 73630

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

17 services17 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

16 services15 patients

Ct scan of lower spine without contrast 72131

A CT scan of the lower spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed images of your lower back area, helping to detect conditions like fractures, infections, or tumors. It's painless and generally quick.

15 services15 patients

X-ray of wrist, minimum of 3 views 73110

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

15 services13 patients

X-ray of ankle, minimum of 3 views 73610

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

14 services13 patients

Ct scan of chest with contrast 71260

A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.

11 services11 patients

X-ray of hand, minimum of 3 views 73130

An X-ray of the hand, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your hand from different angles. This helps in diagnosing fractures, infections, arthritis, or other abnormalities. It's quick and painless.

11 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Baptist Medical Center

Acute Care Hospitals · San Antonio, TX

4/5 CMS rating

OwnershipProprietary

CMS Certification Number450058

Location111 Dallas StreetSan Antonio, TX 78205 · 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

Resolute Health Hospital

Acute Care Hospitals · New Braunfels, TX

3/5 CMS rating

OwnershipProprietary

CMS Certification Number670098

Location555 Creekside Xing,New Braunfels, TX 78130 · Comal County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92335 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

$91.88 typical visit price

range $59.60 – $179.42

Typical copayment $22.97 (range $14.90 – $44.85)

Most-billed visit code 99203

Established Patient

$74.08 typical visit price

range $19.37 – $146.42

Typical copayment $18.52 (range $4.84 – $36.60)

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.

SHEILA ANN VANALLEN PT

Physical Therapist

9961 SIERRA AVE, BUILDING 3A
FONTANA, CA 92335

San Bernardino County (909) 427-7727

MR. JAMES DAVID KILLEEN III M.D.

Pediatrics

9961 SIERRA AVE, KAISER PERMANENTE FONTANA - PEDIATRICS
FONTANA, CA 92335

San Bernardino County (909) 427-6960

MR. DHIRESH N PATEL RPH

Pharmacist