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AMANDA LYNN JAINCHILL M.D.
NPI 1720426901
Family Medicine in National City, CA

Active since June 10, 2013PECOS Enrolled
2835 HIGHLAND AVE, NATIONAL CITY, CA 91950(844) 200-2426(619) 474-4008 Get Directions Write a Review

NPPES record last updated: September 1, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 1, 2026, Feb 9, 2023, Apr 20, 2022 (3 updates tracked since 2022).

About Amanda Lynn Jainchill M.d. NPPES

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

AMANDA LYNN JAINCHILL M.D. (NPI 1720426901) is an individual family medicine provider in National City, California, licensed in California (A141541) and active in the NPI registry since June 2013. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1720426901
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameAMANDA LYNN JAINCHILLCredential: M.D.
Location Address2835 HIGHLAND AVENational City, CA 91950-7404
Mailing Address637 3rd Ave Ste E1Chula Vista, CA 91910-5707 · (844) 200-2426 · Fax (619) 356-2726
Phone(844) 200-2426
Fax(619) 474-4008
Sole ProprietorNo
Enumeration DateJune 10, 2013
Last NPPES UpdateSeptember 1, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 1, 2026
✔ NPI 1720426901 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses✔ Licensed in CA · A141541✔ Licensed in VA · 0116025759
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
2835 HIGHLAND AVE, National City, CA 91950
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Other Names 1

Former Name (1)Amanda Lynn Tarnowicz

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Amanda Lynn Jainchill 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.

Medicare Billing Reassignments

5

Medicare enrollment records show Amanda Jainchill reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Operation Samahan, Inc.
Same address
Federally Qualified Health Center (FQHC)
2743 HIGHLAND AVE.
National City, CA 91950
  • Reassigned Medicare billing, California enrollment
  • 41 clinicians in this Medicare group
NPI 1801907449 (844) 200-2426
On Call Specialists Medical Group Of San Diego, Inc.
7.5 mi
Specialist
4077 FIFTH AVE
San Diego, CA 92103
  • Reassigned Medicare billing, California enrollment
  • 218 clinicians in this Medicare group
NPI 1962175836 (619) 294-8111
Scripps Mercy Physicians Cardiology Medical Corporation
7.5 mi
Internal Medicine
4077 FIFTH AVENUE, SCRIPPS MERCY HOSPITAL
San Diego, CA 92103
  • Reassigned Medicare billing, California enrollment
  • 68 clinicians in this Medicare group
NPI 1477644474 (619) 359-6600
County Of Monterey
379 mi
Specialist
323 N SANBORN RD STE E
Salinas, CA 93905
  • Reassigned Medicare billing, California enrollment
  • 284 clinicians in this Medicare group
NPI 1831970946 (831) 751-6200
Obhg California, P.C.
1,995 mi
Obstetrics & Gynecology
777 LOWNDES HILL RD BLDG 1
Greenville, SC 29607
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Obhg California PC
  • 711 clinicians in this Medicare group
NPI 1215258892 (800) 967-2289

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 91950 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
$94.87 typical visit price
range $62.10 – $184.71
Typical copayment $23.71 (range $15.52 – $46.17)
Most-billed visit code 99203
Established Patient
$108.42 typical visit price
range $20.62 – $151.42
Typical copayment $27.10 (range $5.15 – $37.85)
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 8

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

ROSHNI KAKAIYA DO
Family Medicine
2835 HIGHLAND AVE
NATIONAL CITY, CA 91950
San Diego County (844) 200-2426
JAMIE ROSE TANCIATCO DE LEON
Dental Hygienist
2835 HIGHLAND AVE
NATIONAL CITY, CA 91950
San Diego County (209) 683-5640
JENNIFER P. FERNANDO RNPC
Nurse Practitioner
2835 HIGHLAND AVE
NATIONAL CITY, CA 91950
San Diego County (844) 200-2426
DR. BEVERLY N CRUTHIRDS CALLAWAY DDS
Dentist
2835 HIGHLAND AVE
NATIONAL CITY, CA 91950
San Diego County (844) 200-2426
MIGUEL ALVAREZ-ESTRADA M.D., M.B.A.
Family Medicine
2835 HIGHLAND AVE
NATIONAL CITY, CA 91950
San Diego County (844) 200-2426
CRISTINA ELIZABETH DEIS MD
Family Medicine
2835 HIGHLAND AVE
NATIONAL CITY, CA 91950
San Diego County (619) 474-5567
MOHAMMAD IMANDOUST M.D
Pediatrics
2835 HIGHLAND AVE
NATIONAL CITY, CA 91950
San Diego County (844) 200-2426
ABEGAILLE AVECILLA MIDORO FNP-C
Nurse Practitioner (Family)
2835 HIGHLAND AVE
NATIONAL CITY, CA 91950
San Diego County (844) 200-2426

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 Amanda Jainchill's NPI number?

The NPI number for Amanda Jainchill is 1720426901. It was assigned to this individual provider in the NPPES registry on June 10, 2013. The provider is also known as Amanda Lynn Tarnowicz.

Where is Amanda Jainchill located?

Amanda Jainchill practices at 2835 Highland Ave, National City, CA 91950. The listed phone number is (844) 200-2426.

What is Amanda Jainchill's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Amanda Jainchill enrolled in Medicare?

Yes. Amanda Jainchill is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Amanda Jainchill's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Amanda Jainchill reassigns Medicare benefits to 5 organizations: Operation Samahan, Inc. (National City, CA), On Call Specialists Medical Group Of San Diego, Inc. (San Diego, CA), Scripps Mercy Physicians Cardiology Medical Corporation (San Diego, CA), County Of Monterey (Salinas, CA) and Obhg California, P.C. (Greenville, SC). Each 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 Amanda Jainchill'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 Amanda Jainchill was last updated on September 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.