DR. STEPHANIE CLAUDIA GREGER M.D.
NPI 1912138132
Internal Medicine - Rheumatology in Ventura, CA

Active since August 05, 2009PECOS EnrolledAccepts Medicare Assignment
87.18/100
CMS Quality Rating
3291 LOMA VISTA RD BLDG 340, STE 502, VENTURA, CA 93003(805) 652-6222(805) 652-6221 Get Directions Write a Review

NPPES record last updated: May 28, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: May 28, 2026, Jul 13, 2023, Dec 27, 2022 and 1 more (4 updates tracked since 2016).

About Dr. Stephanie Claudia Greger M.d. NPPES

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

DR. STEPHANIE CLAUDIA GREGER M.D. (NPI 1912138132) is an individual rheumatology provider in Ventura, California, licensed in California (A102891) and active in the NPI registry since August 2009. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of University Of California, Geffen School Of Medicine (2004).

NPPES Registry Identity

NPI1912138132
Entity TypeIndividualFemale
Primary Taxonomy207RR0500X
Provider Legal NameDR. STEPHANIE CLAUDIA GREGERCredential: M.D.
Location Address3291 LOMA VISTA RD BLDG 340, STE 502Ventura, CA 93003-3099
Mailing Address2323 Knoll DrVentura, CA 93003-7307 · (805) 677-5181 · Fax (805) 677-6304
Fax(805) 652-6221
Sole ProprietorNo
Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 2004
Enumeration DateAugust 5, 2009
Last NPPES UpdateMay 28, 20264 updates tracked since enumeration
NPPES CertifiedMay 28, 2026
NPI 1912138132 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
Licenses Licensed in CA · A102891 Licensed in MA · 245362
Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

3291 LOMA VISTA RD BLDG 340, Ventura, CA 93003

Secondary Practice Locations 3

Location 1845 N 10th St Ste 3Santa Paula, CA 93060-1348 · Phone (805) 525-0215
Location 2300 Hillmont Ave Ste 502Ventura, CA 93003-1651 · Phone (805) 652-6222
Location 3200 S Wells Rd Ste 100Ventura, CA 93004-1378 · Phone (805) 647-6322 · Fax (805) 647-1764

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

Dr. Stephanie Claudia Greger 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 ID1456498294
PECOS Enrollment IDI20131230001590
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 3

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.

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.
70 services49 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.
45 services37 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.
14 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93003 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
$140.72 typical visit price
range $62.32 – $185.36
Typical copayment $35.18 (range $15.58 – $46.34)
Most-billed visit code 99204
Established Patient
$108.74 typical visit price
range $20.68 – $151.85
Typical copayment $27.18 (range $5.17 – $37.96)
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.

87.18/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality84.09
Promoting Interoperability100
Improvement Activities40
Cost56.53

Other Providers at the Same Location NPPES 2

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

Obstetrics & Gynecology
3291 LOMA VISTA RD BLDG 340
VENTURA, CA 93003
Ophthalmology
3291 LOMA VISTA RD BLDG 340, SUITE 302
VENTURA, CA 93003

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 Stephanie Greger's NPI number?

The NPI number for Stephanie Greger is 1912138132. It was assigned to this individual provider in the NPPES registry on August 5, 2009.

Where is Stephanie Greger located?

Stephanie Greger practices at 3291 Loma Vista Rd Bldg 340 Ste 502, Ventura, CA 93003. The listed phone number is (805) 652-6222.

What is Stephanie Greger's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Stephanie Greger enrolled in Medicare?

Yes. Stephanie Greger 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 Stephanie Greger was last updated on May 28, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.