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DONNA DEFREITAS M.D.
NPI 1457331498
Internal Medicine - Infectious Disease in San Francisco, CA

Active since January 17, 2006PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
450 STANYAN ST # T2-10, SAN FRANCISCO, CA 94117(415) 750-5736(415) 591-7141 Get Directions Write a Review

NPPES record last updated: November 5, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Donna Defreitas M.d. NPPES

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

DONNA DEFREITAS M.D. (NPI 1457331498) is an individual infectious disease provider in San Francisco, California, licensed in California (A79667) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, is affiliated with Texas Health Harris Methodist Hospital Fort Worth, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1457331498
Entity TypeIndividualFemale
Primary Taxonomy207RI0200X
Provider Legal NameDONNA DEFREITASCredential: M.D.
Location Address450 STANYAN ST # T2-10San Francisco, CA 94117
Mailing Address4150 V St, Pssb, G500Sacramento, CA 95817-1460 · (916) 734-3815
Phone(415) 750-5736
Fax(415) 591-7141
Sole ProprietorNo
Medical School CMSUniversity Of Virginia School Of MedicineGraduated 1998
Enumeration DateJanuary 17, 2006
Last NPPES UpdateNovember 5, 2019
✔ NPI 1457331498 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CA · A79667
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
450 STANYAN ST # T2-10, San Francisco, CA 94117
Open in Google Maps ↗

Secondary Practice Locations 2

Location 14150 V St, PSSB, G500Sacramento, CA 95817-1460 · Phone (916) 734-3741 · Fax (916) 734-7766
Location 21 Shrader St Ste 400San Francisco, CA 94117-1035 · Phone (415) 750-5176 · Fax (415) 591-7141

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections 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

Donna Defreitas 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 ID9335128925
PECOS Enrollment IDI20210518001269
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

4

Medicare enrollment records show Donna Defreitas reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Alameda Health System
11 mi
Clinic/Center
501 S SHORE CTR W, SUITE A-F
Alameda, CA 94501
  • Reassigned Medicare billing, California enrollment
  • 900 clinicians in this Medicare group
NPI 1124446158 (510) 814-4630
Marin Hospitalist Medical Group, Inc.
13 mi
Internal Medicine
250 BON AIR RD, 3RD FLOOR
Greenbrae, CA 94904
  • Reassigned Medicare billing, California enrollment
  • 82 clinicians in this Medicare group
NPI 1023041753 (415) 925-7545
Verity Medical Foundation
43 mi
Multi-Specialty
625 LINCOLN AVE
San Jose, CA 95126
  • Reassigned Medicare billing, California enrollment
  • 133 clinicians in this Medicare group
NPI 1326312067 (405) 278-3000
Texas Centers For Infectious Disease Associates PA
1,457 mi
Infectious Disease
1025 COLLEGE AVE
Fort Worth, TX 76104
  • Reassigned Medicare billing, Texas enrollment
  • 15 clinicians in this Medicare group
NPI 1750332441 (817) 810-9811

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 6

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
352 services238 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
130 services74 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
106 services45 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
71 services67 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
20 services20 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
16 services16 patients

Hospital Affiliations CMS Care Compare 3

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

Texas Health Harris Methodist Hospital Fort Worth

Acute Care Hospitals · Fort Worth, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number450135
Location1301 Pennsylvania AvenueFort Worth, TX 76104 · Tarrant County
Emergency services Birthing friendly

Baylor Scott & White All Saints Medical Center Fort Worth

Acute Care Hospitals · Fort Worth, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450137
Location1400 Eighth AveFort Worth, TX 76104 · Tarrant County
Birthing friendly

Texas Health Harris Methodist Hospital Southwest F

Acute Care Hospitals · Fort Worth, TX
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450779
Location6100 Harris PkwyFort Worth, TX 76132 · Tarrant County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94117 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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.

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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality91.21
Improvement Activities40

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 Donna Defreitas's NPI number?

The NPI number for Donna Defreitas is 1457331498. It was assigned to this individual provider in the NPPES registry on January 17, 2006.

Where is Donna Defreitas located?

Donna Defreitas practices at 450 Stanyan St # T2-10, San Francisco, CA 94117. The listed phone number is (415) 750-5736.

What is Donna Defreitas's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Donna Defreitas enrolled in Medicare?

Yes. Donna Defreitas 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 Donna Defreitas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Donna Defreitas reassigns Medicare benefits to 4 organizations: Alameda Health System (Alameda, CA), Marin Hospitalist Medical Group, Inc. (Greenbrae, CA), Verity Medical Foundation (San Jose, CA) and Texas Centers For Infectious Disease Associates PA (Fort Worth, TX). 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 Donna Defreitas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Donna Defreitas accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list Donna Defreitas as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Donna Defreitas affiliated with any hospitals?

According to CMS data, Donna Defreitas is affiliated with Texas Health Harris Methodist Hospital Fort Worth, Baylor Scott & White All Saints Medical Center Fort Worth and Texas Health Harris Methodist Hospital Southwest F.

When was this NPI record last updated?

The NPPES record for Donna Defreitas was last updated on November 5, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.