DR. JOHN MICHAEL WEBB M.D.
NPI 1255535647
Radiology - Nuclear Radiology in Sacramento, CA

NPI Status: Active since June 12, 2007

Contact Information

4860 Y ST
DEPT. OF RADIOLOGY, SUITE 3100
SACRAMENTO, CA
ZIP 95817
Phone: (916) 703-2273

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  • Individual
  • Male
  • Years of Experience 21
  • Radiology
  • Nuclear Radiology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About JOHN WEBB

This page provides the complete NPI Profile along with additional information for John Webb, a provider established in Sacramento, California with a medical specialization in Radiology, focusing in nuclear radiology and more than 21 years of experience. The healthcare provider is registered in the NPI registry with number 1255535647 assigned on June 2007. The practitioner's primary taxonomy code is 2085N0904X with license number A100404 (CA). The provider is registered as an individual and his NPI record was last updated 4 years ago.

NPI
1255535647
Provider Name
DR. JOHN MICHAEL WEBB M.D.
Gender
Male
Entity Type
Individual
Location Address
4860 Y ST DEPT. OF RADIOLOGY, SUITE 3100 SACRAMENTO, CA 95817
Location Phone
(916) 703-2273
Mailing Address
4860 Y ST DEPT. OF RADIOLOGY, SUITE 3100 SACRAMENTO, CA 95817
Mailing Phone
(916) 703-2273
Medical School Name
OTHER
Graduation Year
2005
Is Sole Proprietor?
Yes
Enumeration Date
06-12-2007
Last Update Date
02-11-2022
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Radiology Nuclear Radiology

Taxonomy Code
2085N0904X
Type
Allopathic & Osteopathic Physicians
License No.
A100404
License State
CA
Taxonomy Description
A radiologist who is involved in the analysis and imaging of radionuclides and radiolabeled substances in vitro and in vivo for diagnosis and the administration of radionuclides and radiolabeled substances for the treatment of disease.

Medicare Participation & PECOS Enrollment Status

John Webb is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

John Webb is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 4587892278

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20131231000847

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Dxa bone density measurement of hip, pelvis, spine

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

This service was performed 14 times for 14 patients

Dxa bone density measurement of hip, pelvis, spine

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

This service was performed 44 times for 22 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

This service was performed 13 times for 13 patients

X-ray of chest, 1 view

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.

This service was performed 14 times for 13 patients

Reviews for DR. JOHN MICHAEL WEBB M.D.

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1255535647
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
221051031068
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 2 + 1 + 0 + 5 + 1 + 0 + 3 + 1 + 0 + 6 + 8 + 24 = 53
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
60 - 53 = 77

The NPI number 1255535647 is valid because the calculated check digit 7 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 20 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1740272541DR. TIMOTHY WILLIAM CUTLER PHARM.D.
Individual
Pharmacist (Geriatric)4860 Y ST
SACRAMENTO, CA 95817
(916) 703-4006
1528051547REGENTS OF THE UNIVERSITY OF CA
Organization
Clinic/Center (Pain)4860 Y ST
SACRAMENTO, CA 95817
(916) 734-6824
1861485880REGENTS OF THE UNIV OF CA
Organization
Psychiatry & Neurology (Neurology)4860 Y ST
SACRAMENTO, CA 95817
(916) 734-5496
1407840705 ALBERT T LIU MD
Individual
Obstetrics & Gynecology4860 Y ST STE 2500
SACRAMENTO, CA 95817
(916) 734-6930
1609866979DR. H. DAVID MOEHRING MD
Individual
Orthopaedic Surgery (Orthopaedic Trauma)4860 Y ST ACC #3800
SACRAMENTO, CA 95817
(916) 734-2863
1689664955DR. GEORGE T. RAB MD
Individual
Orthopaedic Surgery4860 Y ST ACC #3800
SACRAMENTO, CA 95817
(916) 734-2958
1497745772DR. ROLANDO F. ROBERTO MD
Individual
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)4860 Y ST ACC #3800
SACRAMENTO, CA 95817
(916) 734-6234
1386634665DR. ROBERT M SZABO MD
Individual
Orthopaedic Surgery (Hand Surgery)4860 Y ST ACC #3800
SACRAMENTO, CA 95817
(916) 734-3678
1750371142 SARAH MARSHALL MD
Individual
Family Medicine4860 Y ST STE 1600
SACRAMENTO, CA 95817
(916) 734-2833
1548250848DR. STEVEN DAVID BRASS MD
Individual
Psychiatry & Neurology (Neurology)4860 Y ST SUITE 0100
SACRAMENTO, CA 95817
(916) 734-3588
1528059698DR. MARK A LEE MD
Individual
Orthopaedic Surgery (Orthopaedic Trauma)4860 Y ST ACC #3800
SACRAMENTO, CA 95817
(916) 734-2729
1912988031DR. CHRIS STERLING SHIN M.D.
Individual
Physical Medicine & Rehabilitation4860 Y ST SUITE 3850
SACRAMENTO, CA 95817
(916) 734-5292
1568443695DR. HOLLY HONG ZHAO M.D.
Individual
Physical Medicine & Rehabilitation4860 Y ST SUITE 3850
SACRAMENTO, CA 95817
(916) 734-5294
1144201047DR. CRAIG MICHEL MCDONALD M.D.
Individual
Physical Medicine & Rehabilitation (Pediatric Rehabilitation Medicine)4860 Y ST SUITE 3850
SACRAMENTO, CA 95817
(916) 734-5291
1073594560DR. LOREN T DAVIDSON M.D.
Individual
Physical Medicine & Rehabilitation4860 Y ST SUITE 3850
SACRAMENTO, CA 95817
(916) 734-5292
1578544094PROF. ARTHUR CLAYTON HUNTLEY M.D.
Individual
Dermatology4860 Y ST DEPARTMENT OF DERMATOLOGY SUITE 3400
SACRAMENTO, CA 95817
(916) 734-6795
1609857077DR. EZRA A AMSTERDAM M.D.
Individual
Internal Medicine (Cardiovascular Disease)4860 Y ST SUITE 2820
SACRAMENTO, CA 95817
(916) 724-3764
1629059092DR. RICHARD WANLASS PH.D.
Individual
Clinical Neuropsychologist4860 Y ST SUITE 1100
SACRAMENTO, CA 95817
(916) 734-3420
1326029794 WILLIAM J. BOMMER M.D.
Individual
Internal Medicine (Cardiovascular Disease)4860 Y ST SUITE 0200
SACRAMENTO, CA 95817
(916) 734-3761
1598747800 UMA N. SRIVATSA M.D.
Individual
Internal Medicine (Cardiovascular Disease)4860 Y ST SUITE 2820
SACRAMENTO, CA 95817
(916) 734-3764

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1255535647, enumerated in the NPI registry as an "individual" on June 12, 2007

The provider is located at 4860 Y St Dept. Of Radiology, Suite 3100 Sacramento, Ca 95817 and the phone number is (916) 703-2273

The provider's speciality is Radiology with taxonomy code 2085N0904X with a focus in Nuclear Radiology

The provider has more than 21 years of experience.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

The most common procedures or services performed by this practitioner are: Dxa bone density measurement of hip, pelvis, spine, Dxa bone density measurement of hip, pelvis, spine, Nuclear medicine studies of heart muscle at rest and with stress and spect and X-ray of chest, 1 view.

This NPI record was last updated on June 12, 2007. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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