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JOHN CHARLES PFEFFER M.D.
NPI 1851456602
Obstetrics & Gynecology in Modesto, CA

Active since December 22, 2006PECOS Enrolled
83.63/100
CMS Quality Rating
1541 FLORIDA AVE STE 304, MODESTO, CA 95350(209) 522-1027(209) 529-5398 Get Directions Write a Review

NPPES record last updated: April 4, 2024. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About John Charles Pfeffer M.d. NPPES

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

JOHN CHARLES PFEFFER M.D. (NPI 1851456602) is an individual obstetrics & gynecology provider in Modesto, California, licensed in California (C400620) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1851456602
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameJOHN CHARLES PFEFFERCredential: M.D.
Location Address1541 FLORIDA AVE STE 304Modesto, CA 95350-4439
Mailing Address1400 Florida Ave, Ste. 207Modesto, CA 95350-4422 · (209) 522-1027 · Fax (209) 522-7956
Phone(209) 522-1027
Fax(209) 529-5398
Sole ProprietorNo
Enumeration DateDecember 22, 2006
Last NPPES UpdateApril 4, 2024
NPPES CertifiedApril 4, 2024
✔ NPI 1851456602 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · C400620
Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

1541 FLORIDA AVE STE 304, Modesto, CA 95350
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John Charles Pfeffer M.d. 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.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 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, 20-29 minutes 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.
133 services92 patients
Cervical or vaginal cancer screening; pelvic and clinical breast examination G0101
This procedure involves checking for health issues in the lower abdomen and chest area. It helps identify early signs of certain conditions, increasing the chance for successful treatment. It's a routine check-up that's important for maintaining good health.
66 services66 patients
New patient office or other outpatient visit, 60-74 minutes 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.
46 services46 patients
Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory Q0091
A Papanicolaou smear, often called a Pap smear, is a test to check for changes in cells. A small sample is gently collected from the lower region and sent to a lab for examination. This helps in early detection of potential health issues.
31 services31 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
26 services26 patients
Urinalysis, manual test 81002
A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.
20 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95350 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
$133.94 typical visit price
range $58.87 – $176.60
Typical copayment $33.48 (range $14.71 – $44.15)
Most-billed visit code 99204
Established Patient
$73.16 typical visit price
range $19.28 – $144.60
Typical copayment $18.29 (range $4.82 – $36.15)
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.

83.63/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality72.79
Promoting Interoperability97
Improvement Activities40
Cost62.56

Other Providers at the Same Location NPPES

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

DOUGLAS M PHAN M.D.
Otolaryngology
1541 FLORIDA AVE STE 304
MODESTO, CA 95350
Stanislaus County (209) 577-3388

Frequently Asked Questions

What is John Pfeffer's NPI number?

The NPI number assigned to this healthcare provider is 1851456602, enumerated as an "individual" on December 22, 2006.

Where is the provider located?

The provider is located at 1541 FLORIDA AVE STE 304 MODESTO, CA 95350 and the phone number is (209) 522-1027.

What is the provider's specialty?

Obstetrics & Gynecology with taxonomy code 207V00000X.