1. Home
  2. Directory
  3. California
  4. Vacaville
  5. Internal Medicine
  6. NPI Profile

GREGORY YERVANT WARNER D.O.
NPI 1073704326
Internal Medicine - Infectious Disease in Vacaville, CA

Active since August 01, 2007PECOS EnrolledAccepts Medicare Assignment
1010 NUT TREE RD, SUITE 100B, VACAVILLE, CA 95687(707) 624-7999(707) 624-7998 Get Directions Write a Review

NPPES record last updated: September 17, 2013. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Gregory Yervant Warner D.o. NPPES

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

GREGORY YERVANT WARNER D.O. (NPI 1073704326) is an individual infectious disease provider in Vacaville, California, licensed in California (20A9902) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2005).

NPPES Registry Identity

NPI1073704326
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameGREGORY YERVANT WARNERCredential: D.O.
Location Address1010 NUT TREE RD, SUITE 100BVacaville, CA 95687-4172
Mailing Address1010 Nut Tree Rd, Suite 100bVacaville, CA 95687-4172 · (707) 624-7999 · Fax (707) 624-7998
Phone(707) 624-7999
Fax(707) 624-7998
Sole ProprietorYes
Medical School CMSOtherGraduated 2005
Enumeration DateAugust 1, 2007
Last NPPES UpdateSeptember 17, 2013
✔ NPI 1073704326 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CA · 20A9902
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.
Also ListedInternal MedicineTaxonomy 207R00000X · License 20A9902 (CA)
1010 NUT TREE RD, Vacaville, CA 95687
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gregory Yervant Warner D.o. 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 ID8628131281
PECOS Enrollment IDI20090108000668
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.

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.

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.
510 services173 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.
249 services226 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.
182 services105 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.
24 services24 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95687 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
$145.83 typical visit price
range $65.02 – $191.95
Typical copayment $36.45 (range $16.25 – $47.98)
Most-billed visit code 99204
Established Patient
$113.05 typical visit price
range $21.86 – $157.69
Typical copayment $28.26 (range $5.46 – $39.42)
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.

Other Providers at the Same Location NPPES 9

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

DR. ROBERT KAY PETERSON M.D.
Orthopaedic Surgery (Sports Medicine)
1010 NUT TREE RD, STE 200
VACAVILLE, CA 95687
Solano County (707) 624-7900
MIYA E ALLEN M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1010 NUT TREE RD, SUITE 100B
VACAVILLE, CA 95687
Solano County (707) 624-7947
THOMAS DANIEL ERSKINE M.D.
Internal Medicine
1010 NUT TREE RD, STE 100
VACAVILLE, CA 95687
Solano County (707) 624-7979
LAXMI DHAKAL NP
Nurse Practitioner
1010 NUT TREE RD
VACAVILLE, CA 95687
Solano County (510) 974-9386
DR. ANDREW T BROOKS M.D.
Orthopaedic Surgery
1010 NUT TREE RD, SUITE 200
VACAVILLE, CA 95687
Solano County (707) 624-7900
HANNAH KRIMINS MERTENS PA-C
Physician Assistant
1010 NUT TREE RD, SUITE 200
VACAVILLE, CA 95687
Solano County (707) 624-7900
DR. MELISSA SCHOENWETTER D.O.
Internal Medicine (Rheumatology)
1010 NUT TREE RD, SUITE 200
VACAVILLE, CA 95687
Solano County (707) 624-8530
WAYNE N PEDERSEN DDS
Dentist (General Practice)
1010 NUT TREE RD, SUITE 280
VACAVILLE, CA 95687
Solano County (707) 447-1010

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 Gregory Warner's NPI number?

The NPI number for Gregory Warner is 1073704326. It was assigned to this individual provider in the NPPES registry on August 1, 2007.

Where is Gregory Warner located?

Gregory Warner practices at 1010 Nut Tree Rd Suite 100B, Vacaville, CA 95687. The listed phone number is (707) 624-7999.

What is Gregory Warner's specialty?

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

Is Gregory Warner enrolled in Medicare?

Yes. Gregory Warner 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.

When was this NPI record last updated?

The NPPES record for Gregory Warner was last updated on September 17, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.