WILLIAM MICHAEL PACE MD
NPI 1326096785
Nuclear Medicine in Camarillo, CA

Q: What is William Pace's NPI number?

The NPI number for William Pace is 1326096785. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Q: What is William Pace's specialty?

The primary specialty registered for this NPI is Nuclear Medicine with taxonomy code 207U00000X.

Q: When was this NPI record last updated?

The NPPES record for William Pace was last updated on June 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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 May 05, 2006PECOS EnrolledAccepts Medicare Assignment

2438 N PONDEROSA DR, STE C210 - C213, CAMARILLO, CA 93010(805) 971-1492(805) 301-1492 Get Directions Write a Review

NPPES record last updated: June 18, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About William Michael Pace Md NPPES

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

WILLIAM MICHAEL PACE MD (NPI 1326096785) is an individual nuclear medicine provider in Camarillo, California, licensed in California (A54532) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (1994).

NPPES Registry Identity

NPI1326096785

Entity TypeIndividualMale

Primary Taxonomy207U00000X

Provider Legal NameWILLIAM MICHAEL PACECredential: MD

Location Address2438 N PONDEROSA DR, STE C210 - C213Camarillo, CA 93010-2369

Mailing Address237 Salida Del SolSanta Barbara, CA 93109-2019 · (805) 637-1313

Phone(805) 971-1492

Fax(805) 301-1492

Sole ProprietorYes

Medical School CMSUniversity Of Iowa, Rj & L Carver College Of MedicineGraduated 1994

Enumeration DateMay 5, 2006

Last NPPES UpdateJune 18, 2025

NPPES CertifiedJune 18, 2025

✔ NPI 1326096785 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNuclear MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207U00000X

License✔ Licensed in CA · A54532

Definition

A nuclear medicine specialist employs the properties of radioactive atoms and molecules in the diagnosis and treatment of disease and in research. Radiation detection and imaging instrument systems are used to detect disease as it changes the function and metabolism of normal cells, tissues and organs. A wide variety of diseases can be found in this way, usually before the structure of the organ involved by the disease can be seen to be abnormal by any other techniques. Early detection of coronary artery disease (including acute heart attack), early cancer detection and evaluation of the effect of tumor treatment, diagnosis of infection and inflammation anywhere in the body and early detection of blood clot in the lungs are all possible with these techniques. Unique forms of radioactive molecules can attack and kill cancer cells (e.g., lymphoma, thyroid cancer) or can relieve the severe pain of cancer that has spread to bone

2438 N PONDEROSA DR, STE C210 - C213, Camarillo, CA 93010

Open in Google Maps ↗

Secondary Practice Locations 2

Location 12486 N Ponderosa Dr Ste D106Camarillo, CA 93010-2376 · Phone (805) 484-8479 · Fax (805) 383-0340

Location 2300 W Pueblo StSanta Barbara, CA 93105-4311 · Phone (805) 563-5870

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

William Michael Pace 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 ID5698778777

PECOS Enrollment IDI20060809000474

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 William Pace reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

William M Pace MD Inc

Same address

Nuclear Medicine

2438 N PONDEROSA DR STE C210C213
Camarillo, CA 93010

Reassigned Medicare billing, California enrollment

NPI 1598713968 (805) 971-1492

Sansum Clinic

42 mi

Multi-Specialty

317 W PUEBLO ST
Santa Barbara, CA 93105

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

NPI 1932121514 (805) 681-1768

California Managed Imaging Medical Group, Inc

42 mi

Vascular & Interventional Radiology

2320 BATH ST STE 208
Santa Barbara, CA 93105

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

NPI 1821271727 (805) 682-7744

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 62

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.

Lutetium lu 177 vipivotide tetraxetan, therapeutic, 1 millicurie A9607

Lutetium Lu 177 Vipivotide Tetraxetan is a type of radioactive drug treatment. It targets specific cells in the body, particularly those causing certain types of cancer. The drug attaches to these cells and emits radiation, destroying them. This helps control the growth and spread of the disease.

9,588 services24 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

1,904 services472 patients

Piflufolastat f-18, diagnostic, 1 millicurie A9595

Piflufolastat F-18 is a radioactive diagnostic agent used in PET scans. It helps visualize certain cells in your body, aiding doctors in diagnosing specific conditions. This service involves injecting 1 millicurie of the agent into your body.

1,485 services155 patients

Technetium tc-99m sestamibi, diagnostic, per study dose A9500

Technetium Tc-99m Sestamibi is a diagnostic test used to create images of your heart or breast tissues. It involves a safe radioactive substance injection that helps doctors to detect any abnormalities or changes in these tissues.

1,160 services599 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

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.

795 services786 patients

Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries A9552

Fluorodeoxyglucose F-18 FDG is a radioactive drug used in PET scans. It helps doctors see how your tissues and organs are functioning. The drug is given in a specific dose, up to 45 millicuries, depending on your body size and the type of scan.

725 services570 patients

Nuclear medicine study from skull base to mid-thigh with ct scan 78815

A nuclear medicine study from skull base to mid-thigh with a CT scan involves using a small amount of radioactive material and CT imaging to examine body tissues and organs. This helps detect any abnormalities by providing detailed images of the body's internal structure.

710 services576 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

568 services564 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

370 services365 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) 93017

An exercise or drug-induced heart stress test with an ECG checks how your heart responds to stress. You'll either exercise on a treadmill or be given medication to stress your heart. An ECG then captures your heart's activity, helping detect any issues.

370 services365 patients

Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging 78830

A nuclear medicine study with SPECT and concurrent CT scan is a special imaging test. It uses a small amount of radioactive substance and advanced imaging techniques to create detailed pictures of your internal body structures. It aids in diagnosing and tracking the progress of treatment for various diseases.

201 services198 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

169 services167 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

157 services155 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

155 services153 patients

Nuclear medicine study whole body with ct scan 78816

A Nuclear Medicine Study with a CT Scan is a diagnostic procedure. It uses a small amount of radioactive substance and a CT scan to create detailed images of your body. These images help doctors diagnose, monitor, and treat various conditions.

145 services116 patients

Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging 78830

132 services131 patients

Technetium tc-99m oxidronate, diagnostic, per study dose, up to 30 millicuries A9561

Technetium Tc-99m Oxidronate is a diagnostic procedure. A small amount of radioisotope is injected into your body, which collects in certain bones. A special camera then captures images of the bones, helping to detect any abnormalities or diseases.

109 services107 patients

Nuclear medicine study of liver and bile duct system 78226

A nuclear medicine study of the liver and bile duct system involves the use of a small amount of radioactive material to create detailed images. This helps doctors examine the liver's function and structure, and detect any abnormalities in the bile ducts.

99 services96 patients

Nuclear medicine study of brain with metabolic evaluation 78608

A nuclear medicine study of the brain with metabolic evaluation involves using a safe radioactive substance and special imaging to assess brain function. It helps identify changes in brain metabolism that can indicate certain disorders.

94 services93 patients

Nuclear medicine study of lung ventilation and circulation 78582

A nuclear medicine lung ventilation and circulation study uses a safe radioactive material to create images of air and blood flow in your lungs. It helps identify issues like blood clots or lung diseases. You inhale or receive an injection of this material, and a special camera captures the images.

85 services83 patients

Copper cu-64, dotatate, diagnostic, 1 millicurie A9592

Copper Cu-64 Dotatate is a type of diagnostic test used to detect certain types of tumors. A small amount of radioactive material is introduced into the body, which helps to create detailed images of the affected areas. This helps doctors in diagnosis and treatment planning.

80 services16 patients

Nuclear medicine study of bone taken at different times 78315

A nuclear medicine bone study involves injecting a small amount of radioactive material into your body. This material collects in the bones and is detected by a special camera to create images. These images are taken at different times to track changes and help diagnose bone conditions.

77 services77 patients

Injection, furosemide, up to 20 mg J1940

Furosemide is a medication given via injection, often to help your body eliminate excess fluid or salt. It's typically used to treat issues like heart failure or high blood pressure. The dose mentioned, up to 20 mg, will be adjusted based on your specific needs.

64 services30 patients

Technetium tc-99m tilmanocept, diagnostic, up to 0.5 millicuries A9520

Technetium Tc-99m Tilmanocept is a radioactive diagnostic agent used for imaging and lymph node mapping in the body. It helps doctors locate lymph nodes that may be affected by disease, aiding in effective treatment planning.

60 services39 patients

Nuclear medicine study of parathyroid with spect and ct scan 78072

A nuclear medicine study of the parathyroid with SPECT and CT scan is a diagnostic procedure. It uses a safe radioactive substance and imaging techniques to create detailed pictures of your parathyroid glands. These images help identify any abnormalities or diseases.

59 services59 patients

Nuclear medicine study of stomach to assess emptying 78264

A nuclear medicine study of the stomach assesses how quickly food leaves the stomach. A safe, radioactive substance is added to a meal. The radiation emitted is tracked, creating images that show the food's progress through the stomach. It's non-invasive and painless.

59 services59 patients

Radioactive drug therapy through a vein 79101

Radioactive drug therapy through a vein involves injecting a drug with radioactive properties into your bloodstream. This drug travels throughout your body, targeting and destroying harmful cells, such as cancer cells, while sparing healthy ones. It's a non-invasive procedure to treat certain diseases.

56 services29 patients

Iodine 1-123 ioflupane, diagnostic, per study dose, up to 5 millicuries A9584

Iodine 1-123 Ioflupane is a diagnostic procedure where a small radioactive substance is introduced into your body. It helps to create clear images of your brain, specifically to study the functioning of your brain's nerve cells.

56 services56 patients

Nuclear medicine study of bone and/or joint whole body 78306

A nuclear medicine study of bone and/or joint whole body involves injecting a small amount of radioactive material into your body. This material travels to your bones and emits energy. A special camera captures this energy, creating images of your bones to help identify any abnormalities.

49 services48 patients

Nuclear medicine study of bone and/or joint whole body 78306

48 services47 patients

Injection of radioactive material for x-ray identification of lymph node 38792

This procedure involves injecting a safe radioactive substance into your body. It travels to your lymph nodes, making them visible on X-ray images. This helps in identifying any abnormal nodes for further examination. It's a standard part of many diagnostic processes.

43 services43 patients

Technetium tc-99m sulfur colloid, diagnostic, per study dose, up to 20 millicuries A9541

Technetium Tc-99m sulfur colloid is used in diagnostic imaging tests. It helps to highlight areas of concern in the body by emitting a small amount of radiation that can be detected by a special camera. This helps doctors to diagnose and monitor various health conditions.

41 services41 patients

Nuclear medicine study whole body with ct scan 78816

37 services37 patients

Nuclear medicine study from skull base to mid-thigh with ct scan 78815

36 services34 patients

Florbetapir f18, diagnostic, per study dose, up to 10 millicuries A9586

Florbetapir F18 is a radioactive diagnostic agent used in PET scans to detect beta-amyloid plaques in the brain, which are associated with Alzheimer's disease. This specific service refers to a single study dose of up to 10 millicuries.

36 services36 patients

Nuclear medicine study to assess blood loss 78278

A nuclear medicine study is a type of imaging test. It uses a small amount of radioactive material to help identify blood loss. This material is injected into your body and detected by a special camera, providing images of your internal structures.

33 services28 patients

Nuclear medicine studies of kidney, blood flow, and function 78709

Nuclear medicine studies of the kidney, blood flow, and function involve using small amounts of radioactive materials to create images of your kidneys. This helps in assessing their structure and working condition, aiding in early diagnosis and treatment planning.

32 services30 patients

Technetium tc-99m mertiatide, diagnostic, per study dose, up to 15 millicuries A9562

Technetium Tc-99m Mertiatide is a radiopharmaceutical diagnostic test. It involves the injection of a small dose of radioactive material to create images of your kidneys. This helps doctors evaluate kidney function and detect any abnormalities.

32 services30 patients

Nuclear medicine study of stomach to assess emptying 78264

31 services31 patients

Nuclear medicine study of kidney, blood, flow, and function with drug administration 78708

This procedure helps analyze kidney function using a safe radioactive substance and special imaging. The substance is administered through an injection and travels to your kidneys. Images are then taken to assess blood flow and overall kidney function.

31 services28 patients

Nuclear medicine study of lymphatic system 78195

A nuclear medicine study of the lymphatic system involves injecting a safe, radioactive substance into your body. This substance travels through your lymphatic system and helps create images on a special camera. These images can help doctors diagnose conditions related to your immune system.

28 services28 patients

Iodine i-123 sodium iodide, diagnostic, per 100 microcuries, up to 999 microcuries A9516

Iodine I-123 sodium iodide is a diagnostic procedure used to assess thyroid function. It involves administering a small dose of radioactive iodine, which the thyroid gland absorbs. Images are then taken to monitor the iodine's distribution, helping to identify any thyroid abnormalities.

28 services15 patients

Injection, aminophyllin, up to 250 mg J0280

An aminophyllin injection is a treatment often used for severe asthma or other lung conditions. It helps to relax and open air passages in the lungs, making it easier to breathe. Up to 250 mg can be administered in one dose.

27 services27 patients

Nuclear medicine study of bone taken at different times 78315

26 services26 patients

Technetium tc-99m macroaggregated albumin, diagnostic, per study dose, up to 10 millicuries A9540

Technetium Tc-99m Macroaggregated Albumin is a diagnostic procedure. It involves a safe radioactive substance injected into your bloodstream. The substance helps create clear images of blood flow in your lungs, aiding in accurate diagnosis.

26 services25 patients

Injection of radioactive material for x-ray identification of lymph node 38792

25 services24 patients

Nuclear medicine study of parathyroid with spect and ct scan 78072

23 services22 patients

Nuclear medicine study of lymphatic system 78195

23 services23 patients

Technetium tc-99m pentetate, diagnostic, aerosol, per study dose, up to 75 millicuries A9567

Technetium Tc-99m Pentetate is a nuclear medicine test that helps visualize the lungs. A harmless radioactive substance is inhaled as an aerosol, which then attaches to lung tissue. Images taken can show lung function and detect any abnormalities.

23 services23 patients

Nuclear medicine studies of blood flow in heart muscle at rest and with stress with concurrent ct scan 78431

This is a diagnostic test where a tiny amount of radioactive material is used to examine your heart's blood flow at rest & during stress, alongside a CT scan for detailed images. It helps identify any heart-related issues like blockages or damage.

18 services18 patients

Technetium tc-99m pyrophosphate, diagnostic, per study dose, up to 25 millicuries A9538

Technetium Tc-99m Pyrophosphate is a diagnostic procedure involving a small amount of radioactive material. It helps visualize specific areas in the body to detect conditions like heart disease or bone disorders. It's safe and offers valuable insights for your doctor.

17 services17 patients

Nuclear medicine study of thyroid and thyroid function 78014

A nuclear medicine study of the thyroid involves using a small amount of radioactive material to evaluate thyroid function. It helps identify issues such as overactive or underactive thyroid. The procedure is safe and provides valuable information about your thyroid health.

16 services16 patients

Nuclear medicine study of heart muscle at rest and with stress and spect 78451

A nuclear medicine study of the heart muscle, both at rest and under stress, along with SPECT, helps assess heart health. A safe radioactive substance is injected, which the heart absorbs. Then, a special camera captures images of the heart. This procedure can detect heart disease or other issues.

16 services16 patients

Nuclear medicine study of lung ventilation and circulation 78582

16 services15 patients

Nuclear medicine study, spect imaging, 1 area or single acquisition, single day imaging 78803

A nuclear medicine study with SPECT involves a safe, small amount of radioactive substance to help visualize body organs. SPECT, or Single Photon Emission Computed Tomography, creates detailed 3D images. This helps doctors diagnose and monitor conditions in a specific body area.

16 services16 patients

Technetium tc-99m mebrofenin, diagnostic, per study dose, up to 15 millicuries A9537

Technetium Tc-99m Mebrofenin is a diagnostic test used to assess your liver function. A small amount of a radioactive substance is injected into your body, which helps create images of your liver for detailed examination. It's safe and essential for accurate diagnosis.

16 services16 patients

Nuclear medicine study of liver and bile duct system 78226

15 services15 patients

Nuclear medicine study of lung circulation 78580

A nuclear medicine study of lung circulation involves the use of a safe, radioactive substance to visualize lung function. It helps in diagnosing conditions like blood clots. The substance is injected and images are taken to study the blood flow in your lungs.

14 services14 patients

Nuclear medicine study of thyroid and thyroid function 78014

13 services13 patients

Nuclear medicine study, spect imaging, 1 area or single acquisition, single day imaging 78803

13 services13 patients

Nuclear medicine study of liver and bile duct system with use of drugs 78227

A nuclear medicine study of the liver and bile duct system involves injecting a safe, radioactive substance into the body. This substance helps create images of these areas on a special camera. It's often combined with drug use to improve image clarity and aid in diagnosing various conditions.

12 services12 patients

Nuclear medicine study, spect imaging with concurrent ct scan, at least 2 areas or separate acquisitions, single day imaging, or single area or acquisition over multiple days 78832

A nuclear medicine study with SPECT and concurrent CT scan is a diagnostic procedure. It involves the use of a small amount of radioactive substance and imaging techniques to visualize and assess the function of different body areas. It provides detailed images and data to aid in diagnosis and treatment planning.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93010 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

$140.72 typical visit price

range $62.32 – $185.36

Typical copayment $35.18 (range $15.58 – $46.34)

Most-billed visit code 99204

Established Patient

$108.74 typical visit price

range $20.68 – $151.85

Typical copayment $27.18 (range $5.17 – $37.96)

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.

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 William Pace's NPI number?

The NPI number for William Pace is 1326096785. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Where is William Pace located?

William Pace practices at 2438 N Ponderosa Dr, Ste C210 - C213, Camarillo, CA 93010. The listed phone number is (805) 971-1492.

What is William Pace's specialty?

The primary specialty registered for this NPI is Nuclear Medicine with taxonomy code 207U00000X.

Is William Pace enrolled in Medicare?

Yes. William Pace 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 William Pace's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Pace reassigns Medicare benefits to 3 organizations: William M Pace MD Inc (Camarillo, CA), Sansum Clinic (Santa Barbara, CA) and California Managed Imaging Medical Group, Inc (Santa Barbara, 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 William Pace'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 William Pace was last updated on June 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.