KARLYN YOUNG MD
NPI 1629394598
Internal Medicine in Santa Rosa, CA

Q: What is Karlyn Young's NPI number?

The NPI number for Karlyn Young is 1629394598. It was assigned to this individual provider in the NPPES registry on April 15, 2010.

Q: What is Karlyn Young's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Karlyn Young was last updated on December 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since April 15, 2010PECOS Enrolled

401 BICENTENNIAL WAY, SANTA ROSA, CA 95403(707) 393-4000 Get Directions Write a Review

NPPES record last updated: December 15, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 15, 2021, Aug 22, 2017 (2 updates tracked since 2017).

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About Karlyn Young Md NPPES

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

KARLYN YOUNG MD (NPI 1629394598) is an individual internal medicine provider in Santa Rosa, California, licensed in California (A121672) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1629394598

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameKARLYN YOUNGCredential: MD

Location Address401 BICENTENNIAL WAYSanta Rosa, CA 95403-2149

Mailing Address401 Bicentennial WaySanta Rosa, CA 95403-2149

Phone(707) 393-4000

Sole ProprietorNo

Enumeration DateApril 15, 2010

Last NPPES UpdateDecember 15, 20212 updates tracked since enumeration

✔ NPI 1629394598 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 · A121672

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.

401 BICENTENNIAL WAY, Santa Rosa, CA 95403

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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 (PECOS)

Karlyn Young Md 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 Reassignment

Medicare enrollment records show Karlyn Young reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc

35 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

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 95403 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

$142.00 typical visit price

range $63.04 – $187.01

Typical copayment $35.50 (range $15.76 – $46.75)

Most-billed visit code 99204

Established Patient

$109.88 typical visit price

range $21.02 – $153.40

Typical copayment $27.47 (range $5.25 – $38.35)

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.

MS. JESSICA ANNE RUTLAND R.D.

Dietitian, Registered

401 BICENTENNIAL WAY
SANTA ROSA, CA 95403

Sonoma County (707) 393-4787

KURT FALKENBERG P.T.

Physical Therapist

401 BICENTENNIAL WAY, EAST BUILDING, SUITE 190
SANTA ROSA, CA 95403

Sonoma County (707) 571-3352

DELILAH PATTERSON CRNA

Nurse Anesthetist, Certified Registered

401 BICENTENNIAL WAY
SANTA ROSA, CA 95403

Sonoma County (707) 393-4616

KRISZTINA J. BALAZS MD

Pediatrics

401 BICENTENNIAL WAY
SANTA ROSA, CA 95403

Sonoma County (707) 571-4000

JOHN F. KUNKEL MD

Pathology (Anatomic Pathology)

401 BICENTENNIAL WAY
SANTA ROSA, CA 95403

Sonoma County (707) 571-4000

CRISTINA COREY SCHROEN LCSW

Social Worker (Clinical)

401 BICENTENNIAL WAY
SANTA ROSA, CA 95403

Sonoma County (707) 571-2536

JIE GIOK RAHARDJA PHARMD

Pharmacist

401 BICENTENNIAL WAY
SANTA ROSA, CA 95403

Sonoma County (707) 393-4652

CONOR WILLIAM BOWMAN PHARM.D.

Pharmacist

401 BICENTENNIAL WAY
SANTA ROSA, CA 95403

Sonoma County (818) 522-1238

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 Karlyn Young's NPI number?

The NPI number for Karlyn Young is 1629394598. It was assigned to this individual provider in the NPPES registry on April 15, 2010.

Where is Karlyn Young located?

Karlyn Young practices at 401 Bicentennial Way, Santa Rosa, CA 95403. The listed phone number is (707) 393-4000.

What is Karlyn Young's specialty?

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

Is Karlyn Young enrolled in Medicare?

Yes. Karlyn Young is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Karlyn Young's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karlyn Young reassigns Medicare benefits to Permanente Medical Group Inc (Vallejo, 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 Karlyn Young'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 Karlyn Young was last updated on December 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.