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SIAVASH MEHDIZADEH SERAJ MD
NPI 1316685241
Internal Medicine in French Camp, CA

Active since May 20, 2022PECOS EnrolledAccepts Medicare Assignment
500 W HOSPITAL RD, FRENCH CAMP, CA 95231(209) 468-6032 Get Directions Write a Review

NPPES record last updated: August 12, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 12, 2025, May 27, 2022, May 20, 2022 (3 updates tracked since 2022).

About Siavash Mehdizadeh Seraj Md NPPES

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

SIAVASH MEHDIZADEH SERAJ MD (NPI 1316685241) is an individual internal medicine provider in French Camp, California, licensed in California (A198397) and active in the NPI registry since May 2022. He is enrolled in Medicare PECOS and is a graduate of Other (2014).

NPPES Registry Identity

NPI1316685241
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameSIAVASH MEHDIZADEH SERAJCredential: MD
Location Address500 W HOSPITAL RDFrench Camp, CA 95231-9693
Mailing AddressPo Box 1020Stockton, CA 95201-3120 · (209) 468-6032
Phone(209) 468-6032
Sole ProprietorYes
Medical School CMSOtherGraduated 2014
Enumeration DateMay 20, 2022
Last NPPES UpdateAugust 12, 20253 updates tracked since enumeration
NPPES CertifiedAugust 12, 2025
✔ NPI 1316685241 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A198397
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License A198397 (CA)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
500 W HOSPITAL RD, French Camp, CA 95231
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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

Siavash Mehdizadeh Seraj 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 ID9638670169
PECOS Enrollment IDI20250827003530
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 Siavash Mehdizadeh Seraj reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Galen Inpatient Physicians, PC
7.5 mi
Hospitalist
1205 E NORTH ST
Manteca, CA 95336
  • Reassigned Medicare billing, California enrollment
  • 962 clinicians in this Medicare group
NPI 1689320459 (209) 823-3111

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95231 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
$103.36 typical visit price
range $19.28 – $144.60
Typical copayment $25.84 (range $4.82 – $36.15)
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 20

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

MARIA MONTANEZ
Counselor (Addiction (Substance Use Disorder))
500 W HOSPITAL RD
FRENCH CAMP, CA 95231
San Joaquin County (209) 468-6208
HIBA ALAM MD
Student in an Organized Health Care Education/Training Program
500 W HOSPITAL RD
FRENCH CAMP, CA 95231
San Joaquin County (209) 468-6032
MR. TOMAS LAJIAS MORALES
Counselor (Addiction (Substance Use Disorder))
500 W HOSPITAL RD
FRENCHCAMP, CA 95231
San Joaquin County (209) 468-6129
ANH H. LE MD
Obstetrics & Gynecology
500 W HOSPITAL RD
FRENCH CAMP, CA 95231
San Joaquin County (209) 468-6820
MICHELLE JEAN ROWE D.O.
Family Medicine (Sports Medicine)
500 W HOSPITAL RD
FRENCH CAMP, CA 95231
San Joaquin County (209) 468-6820
ROBERT LEE LEWIS
Counselor (Addiction (Substance Use Disorder))
500 W HOSPITAL RD
FRENCH CAMP, CA 95231
San Joaquin County (209) 468-6857
NAVPREET SINGH
Student in an Organized Health Care Education/Training Program
500 W HOSPITAL RD
FRENCH CAMP, CA 95231
San Joaquin County (209) 468-6641
DR. PETER C. MEADE M.D.
Surgery
500 W HOSPITAL RD
FRENCH CAMP, CA 95231
San Joaquin County (209) 468-6000

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 Siavash Mehdizadeh Seraj's NPI number?

The NPI number for Siavash Mehdizadeh Seraj is 1316685241. It was assigned to this individual provider in the NPPES registry on May 20, 2022.

Where is Siavash Mehdizadeh Seraj located?

Siavash Mehdizadeh Seraj practices at 500 W Hospital Rd, French Camp, CA 95231. The listed phone number is (209) 468-6032.

What is Siavash Mehdizadeh Seraj's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Siavash Mehdizadeh Seraj enrolled in Medicare?

Yes. Siavash Mehdizadeh Seraj 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 Siavash Mehdizadeh Seraj's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Siavash Mehdizadeh Seraj reassigns Medicare benefits to Galen Inpatient Physicians, PC (Manteca, 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 Siavash Mehdizadeh Seraj'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 Siavash Mehdizadeh Seraj was last updated on August 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.