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JILLIAN A AHRENS M.D.
NPI 1225307457
Internal Medicine in Sacramento, CA

Active since December 16, 2011PECOS Enrolled
4150 V ST, STE G500, SACRAMENTO, CA 95817(916) 734-2737 Get Directions Write a Review

NPPES record last updated: February 7, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Jillian A Ahrens M.d. NPPES

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

JILLIAN A AHRENS M.D. (NPI 1225307457) is an individual internal medicine provider in Sacramento, California, licensed in California (125753) and active in the NPI registry since December 2011. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1225307457
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameJILLIAN A AHRENSCredential: M.D.
Location Address4150 V ST, STE G500Sacramento, CA 95817-1460
Mailing Address4150 V St, Ste G500Sacramento, CA 95817-1460 · (916) 734-2737
Phone(916) 734-2737
Sole ProprietorNo
Enumeration DateDecember 16, 2011
Last NPPES UpdateFebruary 7, 2017
✔ NPI 1225307457 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 125753
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.
4150 V ST, Sacramento, CA 95817
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Priority Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jillian A Ahrens 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

2

Medicare enrollment records show Jillian Ahrens reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Permanente Medical Group Inc
18 mi
Internal Medicine
975 SERENO DRIVE
Vallejo, CA 94589
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1336222397 (707) 651-1000
Regents Of The Univ Of Ca
42 mi
Medical Microbiology
3146 TUPPER HALL
Davis, CA 95616
  • Reassigned Medicare billing, California enrollment
  • 2,570 clinicians in this Medicare group
NPI 1053304071 (530) 752-9402

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 95817 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
$137.20 typical visit price
range $60.44 – $180.85
Typical copayment $34.30 (range $15.11 – $45.21)
Most-billed visit code 99204
Established Patient
$105.95 typical visit price
range $19.88 – $148.15
Typical copayment $26.48 (range $4.97 – $37.03)
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.

KENNETH D. WHEELER CRNA
Nurse Anesthetist, Certified Registered
4150 V ST, PSSB-SUITE 1200, MED: ANESTHESIA
SACRAMENTO, CA 95817
Sacramento County (916) 734-7985
DR. MICHAEL JOHN THORNTON MD
Internal Medicine (Critical Care Medicine)
4150 V ST, SUITE 3400
SACRAMENTO, CA 95817
Sacramento County (916) 734-3566
THOMAS M. GOODNOW CRNA
Nurse Anesthetist, Certified Registered
4150 V ST, PSSB-SUITE 1200, MED: ANESTHESIA
SACRAMENTO, CA 95817
Sacramento County (916) 734-7985
DR. POURIA KASHKOULI M.D.
Internal Medicine
4150 V ST, #3116
SACRAMENTO, CA 95817
Sacramento County (916) 734-7080
DR. ALISON SEMRAD D.O.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
4150 V ST, #3116
SACRAMENTO, CA 95817
Sacramento County (916) 734-7080
DR. DIANE HADDOCK M.D.
Internal Medicine
4150 V ST, #3116
SACRAMENTO, CA 95817
Sacramento County (916) 734-7080
JOHN S MILLAR M.D.
Internal Medicine (Critical Care Medicine)
4150 V ST, SUITE 3400
SACRAMENTO, CA 95817
Sacramento County (916) 734-3564
UC DAVIS
General Acute Care Hospital
4150 V ST, 2100
SACRAMENTO, CA 95817
Sacramento County (916) 734-8583

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 Jillian Ahrens's NPI number?

The NPI number for Jillian Ahrens is 1225307457. It was assigned to this individual provider in the NPPES registry on December 16, 2011.

Where is Jillian Ahrens located?

Jillian Ahrens practices at 4150 V St Ste G500, Sacramento, CA 95817. The listed phone number is (916) 734-2737.

What is Jillian Ahrens's specialty?

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

Is Jillian Ahrens enrolled in Medicare?

Yes. Jillian Ahrens is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Jillian Ahrens's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jillian Ahrens reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (Vallejo, CA) and Regents Of The Univ Of Ca (Davis, CA). 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 Jillian Ahrens's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jillian Ahrens accept?

Health plans from Blue Cross and Blue Shield of Texas and Priority Health list Jillian Ahrens as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Jillian Ahrens was last updated on February 7, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.