Siddharth Singhal, MD
Internal Medicine Physician · Tucson, AZ
Siddharth Singhal, MD is an internal medicine physician with a practice address in Tucson, Arizona, and NPI 1144451071, issued on Jul 27, 2009. Check the license (Arizona 45905, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Siddharth Singhal
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 45905 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1501 N Campbell Ave RM 6336, Tucson, AZ 85724
- Phone
- (520) 626-2761
- Enumerated
- Jul 27, 2009
- Record last updated
- Jun 1, 2024
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 1501 N Campbell Ave RM 6336
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Siddharth Singhal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 45905Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
28 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Industry payments in 2024: $70.07
1 payment: food and beverage; the largest payer was Harmony Biosciences LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Siddharth Singhal among 2,853 internal medicine physician records in Arizona
Siddharth Singhal, MD is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 57% of them.
- NPI issued2009 · 57% of these records are older, 40% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2024 · 51% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
651 internal medicine physician records list a practice address in Tucson
They are 651 of the 18,788 NPPES records with a practice address in Tucson, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Tucson → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mridula Aggarwal, MDTucson, AZ 857241932193885
- Craig Brown, DOTucson, AZ 857241043417488
- Joao Ferreira, M.D.Tucson, AZ 857241649339490
- William Johnson, MDTucson, AZ 857241346349768
- Kevin Krcmarik, M.D.Tucson, AZ 857241598962532
- Lorraine Mackstaller, MDTucson, AZ 857241932207479
- Victoria Maizes, MDTucson, AZ 857241477651818
- Laura Meinke, MDTucson, AZ 857241467547034
Common questions
What is Siddharth Singhal, MD's NPI number?
Siddharth Singhal, MD's National Provider Identifier (NPI) is 1144451071, issued on Jul 27, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Siddharth Singhal, MD located?
The NPPES record lists a practice address at 1501 N Campbell Ave RM 6336, Tucson, AZ, 85724. Phone: (520) 626-2761. Providers update this record themselves, so call before visiting.
How can I verify Siddharth Singhal, MD's license?
NPPES lists Arizona license number 45905, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Siddharth Singhal, MD prescribe under Medicare Part D?
In 2024, Siddharth Singhal, MD had 28 Medicare Part D claims; 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.