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DR. MARC T FIELDS MD
NPI 1730143066
Radiology - Radiation Oncology in Rohnert Park, CA

Active since April 13, 2006PECOS EnrolledAccepts Medicare Assignment
301 PROFESSIONAL CENTER DR, ROHNERT PARK, CA 94928(209) 543-0684(209) 343-3809 Get Directions Write a Review

NPPES record last updated: July 19, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 19, 2023, Dec 22, 2021 (2 updates tracked since 2021).

About Dr. Marc T Fields Md NPPES

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

DR. MARC T FIELDS MD (NPI 1730143066) is an individual radiation oncology provider in Rohnert Park, California, licensed in California (C52087) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Missouri, Kansas City, School Of Medicine (1994).

NPPES Registry Identity

NPI1730143066
Entity TypeIndividualMale
Primary Taxonomy2085R0001X
Provider Legal NameDR. MARC T FIELDSCredential: MD
Location Address301 PROFESSIONAL CENTER DRRohnert Park, CA 94928-2152
Mailing AddressPo Box 756Danville, CA 94526-0756 · (209) 543-0364 · Fax (209) 343-3809
Phone(209) 543-0684
Fax(209) 343-3809
Sole ProprietorNo
Medical School CMSUniversity Of Missouri, Kansas City, School Of MedicineGraduated 1994
Enumeration DateApril 13, 2006
Last NPPES UpdateJuly 19, 20232 updates tracked since enumeration
NPPES CertifiedJuly 19, 2023
✔ NPI 1730143066 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
License✔ Licensed in CA · C52087
Definition
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
301 PROFESSIONAL CENTER DR, Rohnert Park, CA 94928
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Other Identifiers 1

Medicaid00C520870CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Marc T Fields 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 ID941226138
PECOS Enrollment IDI20060120000247
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94928 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
$187.01 typical visit price
range $63.04 – $187.01
Typical copayment $46.75 (range $15.76 – $46.75)
Most-billed visit code 99205
Established Patient
$77.94 typical visit price
range $21.02 – $153.40
Typical copayment $19.48 (range $5.25 – $38.35)
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.

Reported Quality Measures

Breast Cancer Screening
Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer
100%93 patients5/55-star benchmark: 92%
Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
100%142 patients5/55-star benchmark: 85%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
100%406 patients5/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
89%324 patients4/55-star benchmark: 100%
Falls: Screening for Future Fall Risk
Percentage of patients 65 years of age and older who were screened for future fall risk during the measurement period
100%186 patients5/55-star benchmark: 99%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
99%247 patients4/55-star benchmark: 100%
Oncology: Medical and Radiation - Pain Intensity Quantified
Percentage of patient visits, regardless of patient age, with a diagnosis of cancer currently receiving chemotherapy or radiation therapy in which pain intensity is quantified
100%924 patients5/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
64%324 patients3/55-star benchmark: 99%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
100%261 patients5/55-star benchmark: 97%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients tobacco: 100% · 65 patients
100%65 patients
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
71%324 patients3/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
1%324 patients1/55-star benchmark: 59%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 4

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

DR. NIKHIL GADAHAD RAO MD
Radiology (Radiation Oncology)
301 PROFESSIONAL CENTER DR
ROHNERT PARK, CA 94928
Sonoma County (877) 866-0914
CANCER THERAPY MEDICAL GROUP INC
Radiology (Radiation Oncology)
301 PROFESSIONAL CENTER DR
ROHNERT PARK, CA 94928
Sonoma County (707) 584-2200
DR. IRWIN H LEE MD
Radiology (Radiation Oncology)
301 PROFESSIONAL CENTER DR
ROHNERT PARK, CA 94928
Sonoma County (707) 584-2200
PETER HAWKINS M.D., PH.D.
Radiology (Radiation Oncology)
301 PROFESSIONAL CENTER DR
ROHNERT PARK, CA 94928
Sonoma County (707) 584-2200

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 Marc Fields's NPI number?

The NPI number for Marc Fields is 1730143066. It was assigned to this individual provider in the NPPES registry on April 13, 2006.

Where is Marc Fields located?

Marc Fields practices at 301 Professional Center Dr, Rohnert Park, CA 94928. The listed phone number is (209) 543-0684.

What is Marc Fields's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Marc Fields enrolled in Medicare?

Yes. Marc Fields 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.

When was this NPI record last updated?

The NPPES record for Marc Fields was last updated on July 19, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.