NPPES file of Aug 9, 2026

Mahesh Seetharam, MD, FACP

Hematology & Oncology Physician · Phoenix, AZ

Mahesh Seetharam, MD, FACP is a hematology & oncology physician with a practice address in Phoenix, Arizona, and NPI 1487781175, issued on Feb 28, 2007. Check the license (Arizona 43047, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1487781175
Name
Mahesh Seetharam
Credential
MD, FACP
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
43047 AZ
Self-reported in NPPES; status is on the state search
Practice location
5777 E Mayo Blvd, Phoenix, AZ 85054
Phone
(480) 342-2000
Enumerated
Feb 28, 2007
Record last updated
Sep 10, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20101019001627); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5777 E Mayo Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Oluseyi AbidoyeHematology & Oncology Physician1780211029
  2. Neera Agrwal, M.D.Internal Medicine Physician1992780522
  3. Maria Aguilar, MDNeurology Physician1518924190
  4. Sophia Aguirre, MDEmergency Medicine Physician1285384859
  5. Erin Alexander, MS, MSGenetic Counselor (M.S.)1487541595
  6. Nneoma Alozie, MDInternal Medicine Physician1912642695

Verify Mahesh Seetharam in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 43047
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Arizona license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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66% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

299 Medicare Part D claims for 82 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 14 claims were for opioids.

  1. Mahesh Seetharam299
  2. Specialty average877

Most prescribed

  1. Prochlorperazine Maleate53 claims
  2. Ondansetron Hcl43 claims
  3. Dexamethasone24 claims
  4. Prednisone20 claims
  5. Olanzapine14 claims
  6. Pazopanib Hcl12 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: $561.66

6 payments; by number, the most common kind was food and beverage; the largest payer was SpringWorks Therapeutics, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mahesh Seetharam$561.66
  2. Specialty average$7,481.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Dhew Ind Hlth SV Hlth Svs And Mntl Hlth AdmPhoenix, AZ
  2. Mayo Clinic ArizonaScottsdale, AZ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mahesh Seetharam among 285 hematology & oncology physician records in Arizona

Mahesh Seetharam, MD, FACP is one of 285 hematology & oncology physician records with a practice address in Arizona. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 42% of them.

  • NPI issued2007 · 42% of these records are older, 48% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 80% of these records are
  • Graduated1998 · median 2003 among the 229 with a school on file
  • Record last updated2020 · 37% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in Arizona

There are 285 hematology & oncology physician records in Arizona.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Oluseyi AbidoyePhoenix, AZ 850541780211029
  2. Rodolfo Garza Morales, MDPhoenix, AZ 850541952921413
  3. Talal Hilal, M.D.Phoenix, AZ 850541669813978
  4. Gregory Mayer, M.D.Phoenix, AZ 850541881678191
  5. Donald Northfelt, M.D.Phoenix, AZ 850541316922008
  6. Craig Reeder, M.D.Phoenix, AZ 850541134102536
  7. James Slack, M.D.Phoenix, AZ 850541841273588
  8. Tania Cortas, MDPhoenix, AZ 850281720293608

Common questions

What is Mahesh Seetharam, MD, FACP's NPI number?

Mahesh Seetharam, MD, FACP's National Provider Identifier (NPI) is 1487781175, issued on Feb 28, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mahesh Seetharam, MD, FACP located?

The NPPES record lists a practice address at 5777 E Mayo Blvd, Phoenix, AZ, 85054. Phone: (480) 342-2000. Providers update this record themselves, so call before visiting.

How can I verify Mahesh Seetharam, MD, FACP's license?

NPPES lists Arizona license number 43047, 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 Mahesh Seetharam, MD, FACP prescribe under Medicare Part D?

In 2024, Mahesh Seetharam, MD, FACP had 299 Medicare Part D claims for 82 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.