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KARTHIKEYAN SITARAMAN M.D
NPI 1902055320
Internal Medicine in Kentfield, CA

Active since September 09, 2008PECOS EnrolledAccepts Medicare Assignment
1125 SIR FRANCIS DRAKE BLVD, KENTFIELD, CA 94904(415) 456-9680(415) 213-4659 Get Directions Write a Review

NPPES record last updated: July 14, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 14, 2023, Jan 16, 2020 (2 updates tracked since 2020).

About Karthikeyan Sitaraman M.d NPPES

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

KARTHIKEYAN SITARAMAN M.D (NPI 1902055320) is an individual internal medicine provider in Kentfield, California, licensed in California (C172080) and active in the NPI registry since September 2008. He is enrolled in Medicare PECOS and is a graduate of Other (2004).

NPPES Registry Identity

NPI1902055320
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameKARTHIKEYAN SITARAMANCredential: M.D
Location Address1125 SIR FRANCIS DRAKE BLVDKentfield, CA 94904-1418
Mailing Address1125 Sir Francis Drake BlvdKentfield, CA 94904-1418 · (415) 456-9680 · Fax (415) 213-4659
Phone(415) 456-9680
Fax(415) 213-4659
Sole ProprietorNo
Medical School CMSOtherGraduated 2004
Enumeration DateSeptember 9, 2008
Last NPPES UpdateJuly 14, 20232 updates tracked since enumeration
NPPES CertifiedJuly 14, 2023
✔ NPI 1902055320 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 · C172080
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.
1125 SIR FRANCIS DRAKE BLVD, Kentfield, CA 94904
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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

Karthikeyan Sitaraman M.d 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 ID1153476999
PECOS Enrollment IDI20210730001832
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

3

Medicare enrollment records show Karthikeyan Sitaraman reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

1125 Sir Francis Drake Boulevard Operating Company, LLC
Same address
Long Term Care Hospital
1125 SIR FRANCIS DRAKE BLVD
Kentfield, CA 94904
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Amplehealth
  • 66 clinicians in this Medicare group
NPI 1760424261 (415) 456-9680
Pacific Inpatient Medical Group
14 mi
Internal Medicine
1101 VAN NESS AVE
San Francisco, CA 94109
  • Reassigned Medicare billing, California enrollment
  • 213 clinicians in this Medicare group
NPI 1447447248 (415) 531-9047
American Specialty Physicians Group Inc
88 mi
Emergency Medicine
700 17TH ST STE 205
Modesto, CA 95354
  • Reassigned Medicare billing, California enrollment
  • 180 clinicians in this Medicare group
NPI 1164363024 (877) 346-2211

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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
322 services50 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
146 services19 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
14 services13 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94904 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
$154.04 typical visit price
range $69.07 – $202.63
Typical copayment $38.51 (range $17.26 – $50.65)
Most-billed visit code 99204
Established Patient
$119.61 typical visit price
range $23.44 – $166.64
Typical copayment $29.90 (range $5.86 – $41.66)
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.

MR. ARCHIMEDES RAMIREZ M.D.
Neurological Surgery
1125 SIR FRANCIS DRAKE BLVD, SUITE A
KENTFIELD, CA 94904
Marin County (415) 485-3500
TIMOTHY LIU M.D., M.S.
Internal Medicine
1125 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904
Marin County (415) 456-9680
AARON PARK
Internal Medicine
1125 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904
Marin County (415) 456-9680
JOHN ELTON CRANSHAW M.D.
Internal Medicine
1125 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904
Marin County (415) 456-9680
STEPHANIE N YARNOVICH
Pharmacy Technician
1125 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904
Marin County (415) 456-9680
DR. ROBERT PHILIP LASSER PH.D.
Psychologist (Rehabilitation)
1125 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904
Marin County (415) 485-3629
MRS. STEFANIE MARIA GHISLETTA PT
Physical Therapist
1125 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904
Marin County (707) 484-4927
MRS. APRIL AZUCENA GONZALEZ PA-C
Physician Assistant
1125 SIR FRANCIS DRAKE BLVD, SUITE A
KENTFIELD, CA 94904
Marin County (415) 485-3541

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 Karthikeyan Sitaraman's NPI number?

The NPI number for Karthikeyan Sitaraman is 1902055320. It was assigned to this individual provider in the NPPES registry on September 9, 2008.

Where is Karthikeyan Sitaraman located?

Karthikeyan Sitaraman practices at 1125 Sir Francis Drake Blvd, Kentfield, CA 94904. The listed phone number is (415) 456-9680.

What is Karthikeyan Sitaraman's specialty?

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

Is Karthikeyan Sitaraman enrolled in Medicare?

Yes. Karthikeyan Sitaraman 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 Karthikeyan Sitaraman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karthikeyan Sitaraman reassigns Medicare benefits to 3 organizations: 1125 Sir Francis Drake Boulevard Operating Company, LLC (Kentfield, CA), Pacific Inpatient Medical Group (San Francisco, CA) and American Specialty Physicians Group Inc (Modesto, 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 Karthikeyan Sitaraman'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 Karthikeyan Sitaraman was last updated on July 14, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.