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ARUN SHRIKANT HATWALKAR MD
NPI 1689600090
Internal Medicine in Saint Helena, CA

Active since June 25, 2006PECOS Enrolled
10 WOODLAND RD, SAINT HELENA, CA 94574(707) 963-6399(707) 967-5915 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Arun Shrikant Hatwalkar Md NPPES

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

ARUN SHRIKANT HATWALKAR MD (NPI 1689600090) is an individual internal medicine provider in Saint Helena, California, licensed in California (G83226) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1689600090
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameARUN SHRIKANT HATWALKARCredential: MD
Location Address10 WOODLAND RDSaint Helena, CA 94574-9554
Mailing AddressPo Box 7096Stockton, CA 95267-0096 · (209) 956-7725 · Fax (209) 956-7733
Phone(707) 963-6399
Fax(707) 967-5915
Sole ProprietorNo
Enumeration DateJune 25, 2006
Last NPPES UpdateMarch 7, 2023
✔ NPI 1689600090 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 · G83226
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.
10 WOODLAND RD, Saint Helena, CA 94574
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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)

Arun Shrikant Hatwalkar 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 Reassignments

4

Medicare enrollment records show Arun Hatwalkar reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Merced Hospitalist Medical Group, Inc.
137 mi
Internal Medicine
333 MERCY AVE
Merced, CA 95340
  • Reassigned Medicare billing, California enrollment
  • 126 clinicians in this Medicare group
NPI 1730431875 (209) 564-5000
Healthcare Partners Affiliates Medical Group
389 mi
Internal Medicine
1120 W WASHINGTON BLVD
Los Angeles, CA 90015
  • Reassigned Medicare billing, California enrollment
  • 2,052 clinicians in this Medicare group
NPI 1659312593 (213) 623-2225
Corona Hospitalist Medical Group, Inc.
423 mi
Internal Medicine
800 S MAIN ST
Corona, CA 92882
  • Reassigned Medicare billing, California enrollment
  • 42 clinicians in this Medicare group
NPI 1477832871 (310) 321-0143
Healthcare Crossing Corporation
455 mi
Internal Medicine
39765 DATE ST STE 102
Murrieta, CA 92563
  • Reassigned Medicare billing, California enrollment
  • 48 clinicians in this Medicare group
NPI 1518953298 (951) 894-4665

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 94574 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
$145.99 typical visit price
range $65.08 – $192.16
Typical copayment $36.49 (range $16.27 – $48.04)
Most-billed visit code 99204
Established Patient
$113.15 typical visit price
range $21.86 – $157.83
Typical copayment $28.28 (range $5.46 – $39.45)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Adult Sinusitis: Antibiotic Prescribed for Acute Viral Sinusitis (Overuse)
Percentage of patients, aged 18 years and older, with a diagnosis of acute viral sinusitis who were prescribed an antibiotic within 10 days after onset of symptoms
Lower rates are better for this measure.
79%167 patients1/55-star benchmark: 100%
Adult Sinusitis: Computerized Tomography (CT) for Acute Sinusitis (Overuse)
Percentage of patients aged 18 years and older with a diagnosis of acute sinusitis who had a computerized tomography (CT) scan of the paranasal sinuses ordered at the time of diagnosis or received within 28 days after date of diagnosis
Lower rates are better for this measure.
2%162 patients
Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
27%869 patients2/55-star benchmark: 100%
Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
39%726 patients2/55-star benchmark: 85%
Diabetes: Eye Exam
Percentage of patients 18-75 years of age with diabetes who had a retinal or dilated eye exam by an eye care professional during the measurement period or a negative retinal exam (no evidence of retinopathy) in the 12 months prior to the measurement period
30%144 patients2/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
97%5,871 patients4/55-star benchmark: 99%
Health Information Exchange
The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…
57%1,519 patients3/55-star benchmark: 88%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
96%712 patients4/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
77%1,692 patients4/55-star benchmark: 97%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
34%1,644 patients2/55-star benchmark: 97%
Preventive Care and Screening: Influenza Immunization
Percentage of patients aged 6 months and older seen for a visit between October 1 and March 31 who received an influenza immunization OR who reported previous receipt of an influenza immunization
31%1,073 patients2/55-star benchmark: 88%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
88%1,692 patients4/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
64%1,692 patients3/55-star benchmark: 89%
Urinary Incontinence: Plan of Care for Urinary Incontinence in Women Aged 65 Years and Older
Percentage of female patients aged 65 years and older with a diagnosis of urinary incontinence with a documented plan of care for urinary incontinence at least once within 12 months
50%26 patients
View, Download, or Transmit (VDT)
At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.
60%1,692 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

DOUGLAS PHILIP TAPPER M.D.
Internal Medicine (Critical Care Medicine)
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-6399
DR. GEOFFREY WILLIAM HORN DO
Radiology (Diagnostic Radiology)
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-6430
KATHERINE LYNN SALLAS
Perfusionist
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-3611
DAN CLAY M.D.
Emergency Medicine
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-6311
NAZIR J. HABIB MD
Internal Medicine (Critical Care Medicine)
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-6399
SEANEEN WHALEY F.N.P
Nurse Practitioner (Family)
10 WOODLAND RD, ICU ROOM 500
SAINT HELENA, CA 94574
Napa County (707) 963-6445
MONA HUISMAN
Occupational Therapist
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-6596
ADVENTIST HEALTH CALIFORNIA MEDICAL GROUP, INC.
Preventive Medicine (Public Health & General Preventive Medicine)
10 WOODLAND RD
SAINT HELENA, CA 94574
Napa County (707) 963-2002

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 Arun Hatwalkar's NPI number?

The NPI number for Arun Hatwalkar is 1689600090. It was assigned to this individual provider in the NPPES registry on June 25, 2006.

Where is Arun Hatwalkar located?

Arun Hatwalkar practices at 10 Woodland Rd, Saint Helena, CA 94574. The listed phone number is (707) 963-6399.

What is Arun Hatwalkar's specialty?

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

Is Arun Hatwalkar enrolled in Medicare?

Yes. Arun Hatwalkar is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Arun Hatwalkar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Arun Hatwalkar reassigns Medicare benefits to 4 organizations: Merced Hospitalist Medical Group, Inc. (Merced, CA), Healthcare Partners Affiliates Medical Group (Los Angeles, CA), Corona Hospitalist Medical Group, Inc. (Corona, CA) and Healthcare Crossing Corporation (Murrieta, 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 Arun Hatwalkar'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 Arun Hatwalkar was last updated on March 7, 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.