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GRANT R GWINUP MD
NPI 1669463964
Emergency Medicine in Placerville, CA

Active since November 04, 2005PECOS EnrolledAccepts Medicare Assignment
1095 MARSHALL WAY STE 203, PLACERVILLE, CA 95667(530) 344-5496 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 21, 2022, Mar 17, 2018 (2 updates tracked since 2018).

About Grant R Gwinup Md NPPES

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

GRANT R GWINUP MD (NPI 1669463964) is an individual emergency medicine provider in Placerville, California, licensed in California (G57154) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Arizona College Of Medicine (1984).

NPPES Registry Identity

NPI1669463964
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameGRANT R GWINUPCredential: MD
Location Address1095 MARSHALL WAY STE 203Placerville, CA 95667-5722
Mailing AddressPo Box 45680San Francisco, CA 94145-0680 · (530) 344-5496
Phone(530) 344-5496
Sole ProprietorNo
Medical School CMSUniversity Of Arizona College Of MedicineGraduated 1984
Enumeration DateNovember 4, 2005
Last NPPES UpdateJuly 21, 20222 updates tracked since enumeration
✔ NPI 1669463964 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 · G57154
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 ListedGeneral PracticeTaxonomy 208D00000X · License G57154 (CA)
1095 MARSHALL WAY STE 203, Placerville, CA 95667
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1825 Delbon AveTurlock, CA 95382-2016 · Phone (209) 342-2300 · Fax (209) 524-4240
Location 21100 Marshall WayPlacerville, CA 95667-6533 · Phone (530) 622-1441

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

Grant R Gwinup 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 ID8123053345
PECOS Enrollment IDI20050927000874
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 Reassignment

Medicare enrollment records show Grant Gwinup reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Marshall Medical Center
Same address
Family Medicine
1095 MARSHALL WAY, SUITE 100
Placerville, CA 95667
  • Reassigned Medicare billing, California enrollment
  • 152 clinicians in this Medicare group
NPI 1962506097 (530) 626-2920

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 2

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.

Removal of tissue from wound, 20.0 sq cm or less 97597
This procedure involves the careful removal of damaged or infected tissue from a wound that's 20.0 square cm or less. It's done to promote healing and prevent further infection. The process is carried out under local anesthesia, ensuring minimal discomfort.
159 services53 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.
157 services76 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95667 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
$92.61 typical visit price
range $60.44 – $180.85
Typical copayment $23.15 (range $15.11 – $45.21)
Most-billed visit code 99203
Established Patient
$105.95 typical visit price
range $19.88 – $148.15
Typical copayment $26.48 (range $4.97 – $37.03)
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

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

Tape, waterproof, per 18 square inches A4452
DME-Medical/Surgical Supplies · category DA000N
1 supplier12 claims620 services$0.37 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 Grant Gwinup's NPI number?

The NPI number for Grant Gwinup is 1669463964. It was assigned to this individual provider in the NPPES registry on November 4, 2005.

Where is Grant Gwinup located?

Grant Gwinup practices at 1095 Marshall Way Ste 203, Placerville, CA 95667. The listed phone number is (530) 344-5496.

What is Grant Gwinup's specialty?

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

Is Grant Gwinup enrolled in Medicare?

Yes. Grant Gwinup 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 organization bills Medicare for Grant Gwinup's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Grant Gwinup reassigns Medicare benefits to Marshall Medical Center (Placerville, CA). The 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 Grant Gwinup'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 Grant Gwinup was last updated on July 21, 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.