DR. ARUNA KRISHNAN JAYARAMAN M.D., M.H.S.
NPI 1306817903
Internal Medicine - Gastroenterology in Santa Rosa, CA

Q: What is Aruna Jayaraman's NPI number?

The NPI number for Aruna Jayaraman is 1306817903. It was assigned to this individual provider in the NPPES registry on January 31, 2006.

Q: What is Aruna Jayaraman's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Aruna Jayaraman was last updated on May 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 January 31, 2006PECOS EnrolledAccepts Medicare Assignment

3975 OLD REDWOOD HWY, SANTA ROSA, CA 95403(707) 228-8803 Get Directions Write a Review

NPPES record last updated: May 5, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Aruna Krishnan Jayaraman M.d., M.h.s. NPPES

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

DR. ARUNA KRISHNAN JAYARAMAN M.D., M.H.S. (NPI 1306817903) is an individual gastroenterology provider in Santa Rosa, California, licensed in California (A90690) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, maintains a secondary practice location in Healdsburg, and is a graduate of Jefferson Medical College Of Thomas Jefferson University (1999).

NPPES Registry Identity

NPI1306817903

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameDR. ARUNA KRISHNAN JAYARAMANCredential: M.D., M.H.S.

Location Address3975 OLD REDWOOD HWYSanta Rosa, CA 95403-1719

Mailing Address571 Matheson StHealdsburg, CA 95448-4236 · (707) 228-8803

Phone(707) 228-8803

Sole ProprietorYes

Medical School CMSJefferson Medical College Of Thomas Jefferson UniversityGraduated 1999

Enumeration DateJanuary 31, 2006

Last NPPES UpdateMay 5, 2024

NPPES CertifiedMay 5, 2024

✔ NPI 1306817903 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · A90690

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedInternal Medicine · HepatologyTaxonomy 207RI0008X · License A90690 (CA)

3975 OLD REDWOOD HWY, Santa Rosa, CA 95403

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Secondary Practice Location 1

Location 1571 Matheson StHealdsburg, CA 95448-4236 · Phone (707) 228-8803

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

Dr. Aruna Krishnan Jayaraman M.d., M.h.s. 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 ID3971529157

PECOS Enrollment IDI20051017001027

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

Medicare enrollment records show Aruna Jayaraman 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

36 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

Sutter Bay Medical Foundation

52 mi

Multi-Specialty

12 CAMINO ENCINAS
Orinda, CA 94563

Reassigned Medicare billing, California enrollment
4,479 clinicians in this Medicare group

NPI 1366898538 (510) 204-8180

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

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

34 services33 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

31 services31 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

20 services20 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

19 services18 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

16 services15 patients

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 18

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

MICHAEL HEXTER DPT

Physical Therapist

3975 OLD REDWOOD HWY
SANTA ROSA, CA 95403

Sonoma County (707) 566-5557

RUBEN TORRES PT, DPT

Physical Therapist

3975 OLD REDWOOD HWY
SANTA ROSA, CA 95403

Sonoma County (707) 566-5858

HELEN S. YEE M.D., M.P.H.

Physical Medicine & Rehabilitation

3975 OLD REDWOOD HWY, MOB 5 SUITE 152
SANTA ROSA, CA 95403

Sonoma County (707) 566-5557

PATRICIA NICOLE PIERCE F.N.P.

Nurse Practitioner (Family)

3975 OLD REDWOOD HWY, MOB 5 - SUITE 152
SANTA ROSA, CA 95403

Sonoma County (707) 566-5550

DR. ALLISON LINN LOW DPT

Physical Therapist

3975 OLD REDWOOD HWY, MOB 5, SUITE 154
SANTA ROSA, CA 95403

Sonoma County (707) 566-5439

MAX KIEFFER AMORMINO PT, DPT

Physical Therapist

3975 OLD REDWOOD HWY
SANTA ROSA, CA 95403

Sonoma County (707) 566-5557

ELIZABETH ASHLEY SMITH OTR/L, C/NDT

Counselor

3975 OLD REDWOOD HWY
SANTA ROSA, CA 95403

Sonoma County (707) 571-4044

MRS. AMY BETH BREUNINGER AMY BREUNINGER, P.T.

Physical Therapist

3975 OLD REDWOOD HWY, MOB 5 SUITE 154
SANTA ROSA, CA 95403

Sonoma County (707) 566-5858

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 Aruna Jayaraman's NPI number?

The NPI number for Aruna Jayaraman is 1306817903. It was assigned to this individual provider in the NPPES registry on January 31, 2006.

Where is Aruna Jayaraman located?

Aruna Jayaraman practices at 3975 Old Redwood Hwy, Santa Rosa, CA 95403. The listed phone number is (707) 228-8803.

What is Aruna Jayaraman's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Aruna Jayaraman enrolled in Medicare?

Yes. Aruna Jayaraman 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 organizations bill Medicare for Aruna Jayaraman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aruna Jayaraman reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (Vallejo, CA) and Sutter Bay Medical Foundation (Orinda, 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 Aruna Jayaraman'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 Aruna Jayaraman was last updated on May 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.