JENNIFER M VAN WARMERDAM M.D.
NPI 1922232404
Orthopaedic Surgery in San Francisco, CA

Q: What is Jennifer Van Warmerdam's NPI number?

The NPI number for Jennifer Van Warmerdam is 1922232404. It was assigned to this individual provider in the NPPES registry on May 12, 2009.

Q: What is Jennifer Van Warmerdam's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Active since May 12, 2009PECOS EnrolledAccepts Medicare Assignment

96.5/100

CMS Quality Rating

1 SHRADER ST, SUITE 650, SAN FRANCISCO, CA 94117(415) 221-0665(415) 221-0687 Get Directions Write a Review

NPPES record last updated: September 8, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 8, 2023, Aug 5, 2019 (2 updates tracked since 2019).

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About Jennifer M Van Warmerdam M.d. NPPES

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

JENNIFER M VAN WARMERDAM M.D. (NPI 1922232404) is an individual orthopaedic surgery provider in San Francisco, California, licensed in California (A96120) and active in the NPI registry since May 2009. She is enrolled in Medicare PECOS and is a graduate of Creighton University School Of Medicine (2004).

NPPES Registry Identity

NPI1922232404

Entity TypeIndividualFemale

Primary Taxonomy207X00000X

Provider Legal NameJENNIFER M VAN WARMERDAMCredential: M.D.

Location Address1 SHRADER ST, SUITE 650San Francisco, CA 94117-1016

Mailing Address3400 Data Dr, Attn Credentialing/payer EnrollmentRancho Cordova, CA 95670-7956

Phone(415) 221-0665

Fax(415) 221-0687

Sole ProprietorNo

Medical School CMSCreighton University School Of MedicineGraduated 2004

Enumeration DateMay 12, 2009

Last NPPES UpdateSeptember 8, 20232 updates tracked since enumeration

NPPES CertifiedSeptember 8, 2023

✔ NPI 1922232404 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

License✔ Licensed in CA · A96120

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

1 SHRADER ST, San Francisco, CA 94117

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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

Jennifer M Van Warmerdam 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 ID9234283235

PECOS Enrollment IDI20101028000170

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 Jennifer Van Warmerdam reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ucsf Health Community Hospitals

0.4 mi

Clinic/Center

2235 HAYES ST, 5TH FLOOR
San Francisco, CA 94117

Reassigned Medicare billing, California enrollment
Medicare enrollment name: Dignity Health
38 clinicians in this Medicare group

NPI 1780727792 (415) 688-1000

University Of California San Francisco

0.5 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

0.5 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

Ucsf Dept Of Surgery

0.5 mi

Surgery

505 PARNASSUS AVE
San Francisco, CA 94143

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

NPI 1477627537 (415) 353-2161

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 17

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.

Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg J7325

Synvisc or Synvisc-One is a treatment involving an injection of a substance called hyaluronan into your joints. This substance, naturally found in the body, helps lubricate and cushion your joints, reducing pain and improving mobility. It's often used for arthritis patients.

4,945 services59 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

1,102 services169 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.

341 services240 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

220 services152 patients

X-ray of knee, 4 or more views 73564

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

135 services121 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

84 services79 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.

80 services80 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

62 services53 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

50 services50 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

35 services33 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

32 services32 patients

Replacement of thigh bone and hip joint with prosthesis 27130

This procedure, known as hip arthroplasty, involves replacing your damaged thigh bone and hip joint with artificial parts, called a prosthesis. It helps relieve pain, improve mobility, and enhance your quality of life.

30 services28 patients

Replacement of knee joint, both sides of knee 27447

A bilateral knee joint replacement is a procedure where the damaged parts of both your knee joints are replaced with artificial parts. It aims to relieve pain and improve mobility. The process involves a surgical operation under anesthesia.

29 services29 patients

X-ray of both hips, 3-4 views 73522

An X-ray of both hips with 3-4 views is a safe imaging procedure. It involves capturing multiple pictures of your hip joints from different angles. This helps in diagnosing conditions like arthritis or fractures. You'll need to stay still during the process for clear images.

22 services22 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

21 services21 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

17 services17 patients

X-ray of pelvis, 1-2 views 72170

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

12 services12 patients

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

$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

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

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.

96.5/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

80.34

Promoting Interoperability

100

Improvement Activities

Reported Quality Measures

Risk-standardized complication rate (RSCR) following elective primary total hip arthroplasty (THA) and/or total knee arthroplasty (TKA) for Merit-based Incentive Payment System (MIPS)

Lower rates are better for this measure.

0.03%

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.

Referred Medical Equipment & Supplies CMS DME claims

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

Walker, folding, wheeled, adjustable or fixed height E0143

DME-Other DME · category DE000N

2 suppliers11 claims11 services$42.11 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

MR. PETER ANTHONY SOLAN OTC

1 SHRADER ST, SUITE 650
SAN FRANCISCO, CA 94117

San Francisco County (415) 221-0665

DR. KENNETH MILLS M.D.

Internal Medicine

1 SHRADER ST, SUITE 640
SAN FRANCISCO, CA 94117

San Francisco County (415) 752-0100

SHEELA THAKOR PATEL MD

Surgery (Vascular Surgery)

1 SHRADER ST, STE 600
SAN FRANCISCO, CA 94117

San Francisco County (415) 750-5797

SF SPINE GROUP, PC

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)

1 SHRADER ST, STE 450
SAN FRANCISCO, CA 94117

San Francisco County (415) 750-5847

DR. EDDIE TANG M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery)

1 SHRADER ST, SUITE 600
SAN FRANCISCO, CA 94117

San Francisco County (415) 387-9992

DR. CARL E BRICCA D.O.

Internal Medicine

1 SHRADER ST, SUITE 640
SAN FRANCISCO, CA 94117

San Francisco County (415) 752-0100

SERGIO R BELLO MEDICAL CORPORATION

Internal Medicine (Cardiovascular Disease)

1 SHRADER ST, 600
SAN FRANCISCO, CA 94117

San Francisco County (415) 392-1386

DR. JAMES ZUCHERMAN M.D.

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)

1 SHRADER ST
SAN FRANCISCO, CA 94117

San Francisco County (415) 750-5835

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 Jennifer Van Warmerdam's NPI number?

The NPI number for Jennifer Van Warmerdam is 1922232404. It was assigned to this individual provider in the NPPES registry on May 12, 2009.

Where is Jennifer Van Warmerdam located?

Jennifer Van Warmerdam practices at 1 Shrader St Suite 650, San Francisco, CA 94117. The listed phone number is (415) 221-0665.

What is Jennifer Van Warmerdam's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Jennifer Van Warmerdam enrolled in Medicare?

Yes. Jennifer Van Warmerdam 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 Jennifer Van Warmerdam's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jennifer Van Warmerdam reassigns Medicare benefits to 4 organizations: Ucsf Health Community Hospitals (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Ucsf Dept Of Surgery (San Francisco, 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 Jennifer Van Warmerdam'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 Jennifer Van Warmerdam was last updated on September 8, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.