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NICHOLAS RAYMOND STARK MD
NPI 1154826709
Emergency Medicine in San Francisco, CA

Active since March 27, 2018PECOS Enrolled
74.46/100
CMS Quality Rating
505 PARNASSUS AVE RM M24, SAN FRANCISCO, CA 94143(415) 206-8000 Get Directions Write a Review

NPPES record last updated: July 18, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 18, 2022, Mar 27, 2018 (2 updates tracked since 2018).

About Nicholas Raymond Stark Md NPPES

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

NICHOLAS RAYMOND STARK MD (NPI 1154826709) is an individual emergency medicine provider in San Francisco, California, licensed in California (A166949) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1154826709
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameNICHOLAS RAYMOND STARKCredential: MD
Location Address505 PARNASSUS AVE RM M24San Francisco, CA 94143-2204
Mailing Address505 Parnassus Ave Rm M24San Francisco, CA 94143-2204
Phone(415) 206-8000
Sole ProprietorNo
Enumeration DateMarch 27, 2018
Last NPPES UpdateJuly 18, 20222 updates tracked since enumeration
NPPES CertifiedJuly 18, 2022
✔ NPI 1154826709 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · A166949
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
505 PARNASSUS AVE RM M24, San Francisco, CA 94143
Open in Google Maps ↗

Other Names 1

Former Name (1)Nicholas Raymond Stukel Md

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nicholas Raymond Stark Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

5

Medicare enrollment records show Nicholas Stark reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California San Francisco
0.1 mi
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
0.1 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808
Permanente Medical Group Inc
1.7 mi
Internal Medicine
2238 GEARY
San Francisco, CA 94116
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1841373800 (415) 833-2200
University Of California Sfgh Medical Group
2.9 mi
Family Medicine
1001 POTRERO AVE, BLDG 80 WARD 83 RM 320
San Francisco, CA 94110
  • Reassigned Medicare billing, California enrollment
  • 842 clinicians in this Medicare group
NPI 1174598296 (628) 206-8610
San Joaquin Emergency Medical Associates
113 mi
Emergency Medicine
333 MERCY AVE
Merced, CA 95340
  • Reassigned Medicare billing, California enrollment
  • 141 clinicians in this Medicare group
NPI 1588960413 (844) 474-4019

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 4

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
387 services354 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
376 services361 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
203 services196 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
55 services53 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
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.

74.46/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability76
Improvement Activities40
Cost46.68

Other Providers at the Same Location NPPES 20

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

ALIA LISBETH CHURCH
Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1529
DR. JASKARAN SINGH BAINS MD
Emergency Medicine
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1529
JACOB MISS
Emergency Medicine
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1529
FIONA CHEN
Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1529
JANMEI DELPHINE HUANG MS
Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1529
MICHAELA GONZALEZ MD
Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1529
TIANYU TANG MD
Emergency Medicine
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1529
SIMSON HON
Emergency Medicine
505 PARNASSUS AVE RM M24
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1529

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 Nicholas Stark's NPI number?

The NPI number for Nicholas Stark is 1154826709. It was assigned to this individual provider in the NPPES registry on March 27, 2018. The provider is also known as Nicholas Raymond Stukel MD.

Where is Nicholas Stark located?

Nicholas Stark practices at 505 Parnassus Ave Rm M24, San Francisco, CA 94143. The listed phone number is (415) 206-8000.

What is Nicholas Stark's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Nicholas Stark enrolled in Medicare?

Yes. Nicholas Stark is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Nicholas Stark's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Stark reassigns Medicare benefits to 5 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), Permanente Medical Group Inc (San Francisco, CA), University Of California Sfgh Medical Group (San Francisco, CA) and San Joaquin Emergency Medical Associates (Merced, 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 Nicholas Stark'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 Nicholas Stark was last updated on July 18, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.