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ROBERT M MATZ M.D.
NPI 1558503086
Hospitalist in San Francisco, CA

Active since March 30, 2009PECOS Enrolled
900 HYDE ST RM 410, SAN FRANCISCO, CA 94109(415) 353-6817 Get Directions Write a Review

NPPES record last updated: September 17, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 17, 2018, Sep 18, 2017, Mar 25, 2016 (3 updates tracked since 2016).

About Robert M Matz M.d. NPPES

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

ROBERT M MATZ M.D. (NPI 1558503086) is an individual hospitalist provider in San Francisco, California, licensed in California (A117078) and active in the NPI registry since March 2009. He is enrolled in Medicare PECOS, maintains a secondary practice location in Reno, and is a graduate of University Of Nevada School Of Medicine (2009).

NPPES Registry Identity

NPI1558503086
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameROBERT M MATZCredential: M.D.
Location Address900 HYDE ST RM 410San Francisco, CA 94109-4806
Mailing Address900 Hyde St Rm 410San Francisco, CA 94109-4806 · (415) 353-6817
Phone(415) 353-6817
Sole ProprietorNo
Medical School CMSUniversity Of Nevada School Of MedicineGraduated 2009
Enumeration DateMarch 30, 2009
Last NPPES UpdateSeptember 17, 20183 updates tracked since enumeration
✔ NPI 1558503086 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
Licenses✔ Licensed in CA · A117078✔ Licensed in NV · 18175
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License A117078 (CA)
900 HYDE ST RM 410, San Francisco, CA 94109
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Secondary Practice Location 1

Location 11155 Mill StReno, NV 89502-1576 · Phone (775) 982-7878 · Fax (775) 982-4196

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Robert M Matz M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3870735061
PECOS Enrollment IDI20130819000409
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

8

Medicare enrollment records show Robert Matz reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Galen Inpatient Physicians Inc
Same address
Internal Medicine
900 HYDE ST
San Francisco, CA 94109
  • Reassigned Medicare billing, California enrollment
  • 962 clinicians in this Medicare group
NPI 1730313933 (415) 353-6000
Vituity Hospitalists PC
Same address
Hospitalist
900 HYDE ST
San Francisco, CA 94109
  • Reassigned Medicare billing, California enrollment
  • 182 clinicians in this Medicare group
NPI 1659858025 (415) 353-6000
California Emergency Physicians Medical Group A Professional Corp
0.1 mi
Internal Medicine
1359 PINE ST
San Francisco, CA 94109
  • Reassigned Medicare billing, California enrollment
  • 131 clinicians in this Medicare group
NPI 1316364474 (415) 673-8405
San Francisco Unified Physicians Group, Inc.
0.6 mi
Hospitalist
845 JACKSON ST
San Francisco, CA 94133
  • Reassigned Medicare billing, California enrollment
  • 40 clinicians in this Medicare group
NPI 1982104162 (415) 982-2400
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
Superior Hospitalist Medical Group Inc
355 mi
Hospitalist
1680 E 120TH ST
Los Angeles, CA 90059
  • Reassigned Medicare billing, California enrollment
  • 198 clinicians in this Medicare group
NPI 1780047712 (330) 493-4443
Hospitalist Medicine Physicians Of California, Inc
365 mi
Internal Medicine
18300 US HIGHWAY 18
Apple Valley, CA 92307
  • Reassigned Medicare billing, California enrollment
  • 914 clinicians in this Medicare group
NPI 1184663965 (760) 946-4233
Inpatient Specialists Of California, PC
383 mi
Internal Medicine
2101 N WATERMAN AVE
San Bernardino, CA 92404
  • Reassigned Medicare billing, California enrollment
  • 1,216 clinicians in this Medicare group
NPI 1952792475 (615) 377-5658

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 5

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 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.
504 services247 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
252 services245 patients
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.
180 services110 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.
120 services113 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
61 services22 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94109 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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
5 suppliers24 claims24 services$17.33 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
5 suppliers26 claims26 services$89.90 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Robert Matz's NPI number?

The NPI number for Robert Matz is 1558503086. It was assigned to this individual provider in the NPPES registry on March 30, 2009.

Where is Robert Matz located?

Robert Matz practices at 900 Hyde St Rm 410, San Francisco, CA 94109. The listed phone number is (415) 353-6817.

What is Robert Matz's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Robert Matz enrolled in Medicare?

Yes. Robert Matz is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Robert Matz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robert Matz reassigns Medicare benefits to 8 organizations: Galen Inpatient Physicians Inc (San Francisco, CA), Vituity Hospitalists PC (San Francisco, CA), California Emergency Physicians Medical Group A Professional Corp (San Francisco, CA), San Francisco Unified Physicians Group, Inc. (San Francisco, CA), Marin Hospitalist Medical Group, Inc. (Greenbrae, CA) and 3 more organizations, listed in the Medicare section above. 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 Robert Matz'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 Robert Matz was last updated on September 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.