GREGG D ALZATE MD
NPI 1932173085
Radiology - Diagnostic Radiology in San Diego, CA

Q: What is Gregg Alzate's NPI number?

The NPI number for Gregg Alzate is 1932173085. It was assigned to this individual provider in the NPPES registry on February 15, 2006.

Q: What is Gregg Alzate'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 Gregg Alzate was last updated on October 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 February 15, 2006PECOS EnrolledAccepts Medicare Assignment

81.31/100

CMS Quality Rating

8745 AERO DRIVE, STE 200, SAN DIEGO, CA 92123(858) 565-0950(858) 244-1100 Get Directions Write a Review

NPPES record last updated: October 9, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Gregg D Alzate Md NPPES

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

GREGG D ALZATE MD (NPI 1932173085) is an individual diagnostic radiology provider in San Diego, California, licensed in California (G42015) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (1979).

NPPES Registry Identity

NPI1932173085

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameGREGG D ALZATECredential: MD

Location Address8745 AERO DRIVE, STE 200San Diego, CA 92123-1774

Mailing AddressPo Box 23540San Diego, CA 92193-3540 · (858) 565-0950 · Fax (858) 244-1100

Phone(858) 565-0950

Fax(858) 244-1100

Sole ProprietorNo

Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 1979

Enumeration DateFebruary 15, 2006

Last NPPES UpdateOctober 9, 2007

✔ NPI 1932173085 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 10

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in CA · G42015

Definition

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

Also ListedRadiology · Body ImagingTaxonomy 2085B0100X · License G42015 (CA)

Also ListedRadiology · NeuroradiologyTaxonomy 2085N0700X · License G42015 (CA)

Also ListedRadiology · Nuclear RadiologyTaxonomy 2085N0904X · License G42015 (CA)

Also ListedRadiology · Pediatric RadiologyTaxonomy 2085P0229X · License G42015 (CA)

Also ListedRadiology · Therapeutic RadiologyTaxonomy 2085R0203X · License G42015 (CA)

Also ListedRadiology · Vascular & Interventional RadiologyTaxonomy 2085R0204X · License G42015 (CA)

Also ListedRadiology · Diagnostic UltrasoundTaxonomy 2085U0001X · License G42015 (CA)

Also ListedPain Medicine · Pain MedicineTaxonomy 208VP0000X · License G42015 (CA)

Also ListedPain Medicine · Interventional Pain MedicineTaxonomy 208VP0014X · License G42015 (CA)

8745 AERO DRIVE, San Diego, CA 92123

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Other Identifiers 18

MedicaidGR0083810CA

Medicare PINHW529BCA

Medicare PINTD009BCA

Medicare PINHW529AR

Medicare PINTD009CA

Medicare PINTP110CA

MedicaidZZZ75341ZCA

Medicare UPINA89744

MedicaidGR0083814CA

Medicare PINHW529ACA

Medicare PINW529ACA

MedicaidGR0083812CA

Medicare PINTD009ACA

MedicaidGR0083811CA

MedicaidGR0083813CA

MedicaidGR0083815CA

MedicaidGR0083817CA

Medicaid00G420150CA

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

Gregg D Alzate Md 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 ID749389542

PECOS Enrollment IDI20070619000718

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 Gregg Alzate reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

San Diego Diagnostic Radiology Medical Group, Inc.

Same address

Diagnostic Radiology

8745 AERO DR, SUITE 200
San Diego, CA 92123

Reassigned Medicare billing, California enrollment
71 clinicians in this Medicare group

NPI 1629156583 (858) 565-0950

San Diego Imaging, LLC

1.1 mi

Clinic/Center

7910 FROST STREET, SUITE 100
San Diego, CA 92123

Reassigned Medicare billing, California enrollment
39 clinicians in this Medicare group

NPI 1780312371 (858) 634-5900

Emergency And Acute Care Medical Corporation

1.1 mi

Emergency Medicine

7901 FROST ST
San Diego, CA 92123

Reassigned Medicare billing, California enrollment
1,437 clinicians in this Medicare group

NPI 1437103942 (858) 939-3400

San Diego Imaging-Chula Vista LLC

15 mi

Radiology

765 MEDICAL CENTER COURT
Chula Vista, CA 91911

Reassigned Medicare billing, California enrollment
51 clinicians in this Medicare group

NPI 1649207812 (619) 397-6577

Cardio-Vascular Associates, Inc.

91 mi

Cardiovascular Disease

11760 CENTRAL AVE STE 204
Chino, CA 91710

Reassigned Medicare billing, California enrollment
5 clinicians in this Medicare group

NPI 1972229821 (909) 632-1225

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 36

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.

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967

Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.

1,820 services21 patients

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.

391 services375 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.

277 services271 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.

83 services83 patients

Aspiration of fluid from chest cavity using imaging guidance 32555

This procedure, known as a thoracentesis, involves removing fluid from the space between the lungs and chest wall, called the pleural space. It's performed under imaging guidance to ensure precision. It can help diagnose conditions or relieve symptoms like shortness of breath.

81 services57 patients

Fluoroscopic guidance for insertion or removal of central vein access device 77001

Fluoroscopic guidance for central vein access device insertion or removal is a procedure where a special X-ray, called a fluoroscope, is used to help accurately place or remove a device in a central vein. This device aids in delivering medications or collecting blood samples.

68 services64 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.

62 services62 patients

X-ray of chest, 2 views 71046

56 services56 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.

48 services47 patients

Review by radiologist of ct guidance for needle placement 77012

This process involves a radiologist examining CT scan images to accurately guide a needle's placement within the body. This technique is often used for biopsies or treatments, ensuring precision and safety.

48 services48 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.

46 services44 patients

Drainage of fluid from abdominal cavity using imaging guidance 49083

This procedure involves removing excess fluid from your abdominal cavity, which can relieve discomfort. A specialist uses imaging technology to guide a thin needle into the right spot. The fluid is then drained out safely.

43 services28 patients

Review by radiologist of abscess or sinus cavity study 76080

This procedure involves a specialist, known as a radiologist, examining images of your abscess or sinus cavity. These images help identify any problems or changes in your condition. The radiologist's review is crucial in determining the best course of treatment.

35 services22 patients

Injection of contrast through abdominal cavity tube for x-ray study 49424

This procedure involves injecting a contrast substance through a tube in your abdominal cavity. This helps to highlight certain areas in your body for an X-ray study. It's a crucial step for accurate diagnosis and treatment planning.

33 services22 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.

29 services29 patients

Insertion of non-tunneled central venous tube for infusion (5 years or older) 36556

This procedure involves placing a thin tube into a large vein, usually in the neck or chest, to administer medication or fluids. It's done under local anesthesia to minimize discomfort. It's a standard, safe procedure for individuals aged 5 and above.

26 services25 patients

Biopsy and aspiration of bone marrow sample for diagnosis 38222

A bone marrow biopsy and aspiration is a procedure where a small amount of bone marrow is removed for testing. It involves inserting a needle into a bone, typically the hip, to collect a sample. It can help diagnose various diseases and monitor treatment effectiveness.

26 services26 patients

Ultrasonic guidance for blood vessel access 76937

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

23 services22 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

23 services23 patients

Insertion of tunneled central venous tube for infusion (5 years or older) 36558

The insertion of a tunneled central venous tube is a procedure where a thin, flexible tube is placed into a large vein, usually in the neck or chest. This tube allows healthcare providers to give medications, fluids, or nutrients directly into your bloodstream over a longer period.

22 services20 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.

22 services22 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.

21 services21 patients

Insertion of central venous tube with port (5 years or older) 36561

A central venous tube with port is a small, flexible tube inserted into a large vein, usually in the chest. It allows for easy administration of medication, fluids, or blood products over a long period. A port is attached under the skin for easy access. It's safe for individuals aged 5 and above.

20 services20 patients

Insertion of stomach tube using fluoroscopic guidance with contrast 49440

This is a procedure where a tube is inserted into your stomach to assist with digestion or removal of substances. It's done under fluoroscopic guidance, a type of imaging that allows real-time viewing. Contrast dye is used to enhance the visibility of structures.

18 services18 patients

Replacement of stomach or large bowel tube using fluoroscopic guidance with contrast 49450

This procedure involves replacing a tube in your stomach or large bowel. It's guided by a special type of X-ray called fluoroscopy, which helps ensure accurate placement. Contrast material is used to enhance the visibility of your internal structures.

18 services16 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.

18 services18 patients

Ct scan head or brain without contrast 70450

15 services15 patients

Fluoroscopic guidance for needle placement 77002

Fluoroscopic guidance for needle placement is a medical procedure that uses a special X-ray technology to help accurately place a needle in the body. It's often used in biopsies, injections or other treatments to ensure precision and safety.

15 services15 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.

14 services14 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.

14 services13 patients

Review by radiologist of both arms or legs arteries image 75716

This procedure involves a radiologist examining images of your arm or leg arteries. These images help identify any blockages or abnormalities in the blood vessels that could affect circulation. It's a vital step in diagnosing conditions related to blood flow.

13 services12 patients

Drainage of fluid from chest cavity with insertion of indwelling tube using imaging guidance 32557

This procedure involves removing fluid from your chest cavity, which is the space around your lungs. A small tube is inserted, under image guidance, to drain the fluid. This tube stays in place to prevent fluid buildup, aiding in your breathing and comfort.

12 services11 patients

Removal of plaque in artery of leg, initial vessel 37229

This procedure involves removing plaque from the initial vessel in your leg. Plaque, a build-up of fat, cholesterol, and other substances, can block blood flow. The removal process, known as an angioplasty, restores healthy blood circulation in your leg.

12 services11 patients

Ct scan of chest without contrast 71250

12 services12 patients

Core needle biopsy of lung or center cavity of chest (mediastinum), accessed through skin 32408

A core needle biopsy of the lung or mediastinum is a procedure where a small sample of tissue is collected using a needle inserted through the skin. This helps in diagnosing lung conditions or diseases in the chest's central cavity. It's a safe and minimally invasive process.

11 services11 patients

Ct scan of blood vessels of chest with contrast 71275

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92123 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

$94.87 typical visit price

range $62.10 – $184.71

Typical copayment $23.71 (range $15.52 – $46.17)

Most-billed visit code 99203

Established Patient

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

81.31/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

Improvement Activities

Cost

72.71

Other Providers at the Same Location NPPES 13

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

CHRISTOPHER E DORY MD

Radiology (Diagnostic Radiology)

8745 AERO DRIVE, SUITE 200
SAN DIEGO, CA 92123

San Diego County (858) 565-0950

SEVIL K BRAHME MD

Radiology (Diagnostic Radiology)

8745 AERO DRIVE, STE 200
SAN DIEGO, CA 92123

San Diego County (858) 565-0950

MELVIN O SENAC JR. MD

Radiology (Diagnostic Radiology)

8745 AERO DRIVE, SUITE 200
SAN DIEGO, CA 92123

San Diego County (858) 565-0950

ROBERT C YACULLO MD

Radiology (Diagnostic Radiology)

8745 AERO DRIVE, SUITE 200
SAN DIEGO, CA 92123

San Diego County (858) 565-0950

SCOTT M BOLES MD

Radiology (Diagnostic Radiology)

8745 AERO DRIVE, SUITE 200
SAN DIEGO, CA 92123

San Diego County (858) 565-0950

SHANOE CUTTS MD

Radiology (Diagnostic Ultrasound)

8745 AERO DRIVE, SUITE 200
SAN DIEGO, CA 92123

San Diego County (858) 565-0950

RUSSELL N LOW MD

Radiology (Diagnostic Radiology)

8745 AERO DRIVE, SUITE 200
SAN DIEGO, CA 92123

San Diego County (858) 565-0950

HOWARD R SCHIFFMAN MD

Radiology (Diagnostic Radiology)

8745 AERO DRIVE, SUITE 200
SAN DIEGO, CA 92123

San Diego County (858) 565-0950

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 Gregg Alzate's NPI number?

The NPI number for Gregg Alzate is 1932173085. It was assigned to this individual provider in the NPPES registry on February 15, 2006.

Where is Gregg Alzate located?

Gregg Alzate practices at 8745 Aero Drive Ste 200, San Diego, CA 92123. The listed phone number is (858) 565-0950.

What is Gregg Alzate's specialty?

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

Is Gregg Alzate enrolled in Medicare?

Yes. Gregg Alzate 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 Gregg Alzate's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregg Alzate reassigns Medicare benefits to 5 organizations: San Diego Diagnostic Radiology Medical Group, Inc. (San Diego, CA), San Diego Imaging, LLC (San Diego, CA), Emergency And Acute Care Medical Corporation (San Diego, CA), San Diego Imaging-Chula Vista LLC (Chula Vista, CA) and Cardio-Vascular Associates, Inc. (Chino, CA). 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 Gregg Alzate's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Gregg Alzate was last updated on October 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.