Arun Shrikant Hatwalkar, MD
Internal Medicine Physician · Saint Helena, CA
Arun Shrikant Hatwalkar, MD is an internal medicine physician with a practice address in Saint Helena, California, and NPI 1689600090, issued on Jun 25, 2006. Check the license (California G83226, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Arun Shrikant Hatwalkar
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G83226 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10 Woodland RD, Saint Helena, CA 94574
- Phone
- (707) 963-6399
- Enumerated
- Jun 25, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (707) 967-5915
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 10 Woodland RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nora Allen, RN, CNSAcute Care Clinical Nurse Specialist1710481932
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- Wendy Battistini, PTPhysical Therapist1215888276
- Julie Butulia, RDRegistered Dietitian1679376891
- Danny Cao, PHARMACISTPharmacist1447069570
- David Carelock, CRNACertified Registered Nurse Anesthetist1790773596
Verify Arun Shrikant Hatwalkar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G83226Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
193 Medicare Part D claims for 45 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium14 claims
- Lisinopril12 claims
- Losartan Potassium11 claims
- Venlafaxine Hcl Er11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Arun Shrikant Hatwalkar among 17,696 internal medicine physician records in California
Arun Shrikant Hatwalkar, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2023 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 internal medicine physician records list a practice address in Saint Helena
They are 11 of the 232 NPPES records with a practice address in Saint Helena, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Saint Helena → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sahiba Bajwa, MDSaint Helena, CA 945741346869567
- Matthew Corvo, MDSaint Helena, CA 945741265811475
- Susan Gamble, M.D.Saint Helena, CA 945741790950079
- Leah Grabenauer, MDSaint Helena, CA 945741760740385
- John Hart, MDSaint Helena, CA 945741104904945
- Hirofumi Hashimoto, MDSaint Helena, CA 945741104812585
- Padmaja Manyam, M.D.Saint Helena, CA 945741679882500
- Heather Pena, MDSaint Helena, CA 945741881703973
Common questions
What is Arun Shrikant Hatwalkar, MD's NPI number?
Arun Shrikant Hatwalkar, MD's National Provider Identifier (NPI) is 1689600090, issued on Jun 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Arun Shrikant Hatwalkar, MD located?
The NPPES record lists a practice address at 10 Woodland RD, Saint Helena, CA, 94574. Phone: (707) 963-6399. Providers update this record themselves, so call before visiting.
How can I verify Arun Shrikant Hatwalkar, MD's license?
NPPES lists California license number G83226, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Arun Shrikant Hatwalkar, MD prescribe under Medicare Part D?
In 2024, Arun Shrikant Hatwalkar, MD had 193 Medicare Part D claims for 45 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.