Mary Voltz, M.D.
Hematology & Oncology Physician · Nashua, NH
Mary Voltz, M.D. is a hematology & oncology physician with a practice address in Nashua, New Hampshire, and NPI 1578540670, issued on Dec 29, 2005. Check the license (New Hampshire 9957, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Mary Voltz
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 9957 NH
Self-reported in NPPES; status is on the state search - Practice location
- 166 Kinsley St, Nashua, NH 03060
- Phone
- (603) 880-3408
- Enumerated
- Dec 29, 2005
- Record last updated
- May 9, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 30010296 NH
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 76 in New Hampshire → Look up another NPI →
Also registered at 166 Kinsley St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Voltz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 9957Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
326 Medicare Part D claims for 93 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Anastrozole76 claims
- Letrozole29 claims
- Eliquis27 claims
- Hydroxyurea22 claims
- Acyclovir21 claims
- Gabapentin21 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.
The MIPS final score for 2023 (Medicare payment program): 90.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Mary Voltz among 76 hematology & oncology physician records in New Hampshire
Mary Voltz, M.D. is one of 76 hematology & oncology physician records with a practice address in New Hampshire. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2013 · 58% 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 New Hampshire 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 New Hampshire
There are 76 hematology & oncology physician records in New Hampshire.
All 76 in New Hampshire → Every provider in Nashua → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Nancy Chun, MDNashua, NH 030601356302822
- Abdel Hosein, M.D., PH.D.Nashua, NH 030601538574892
- Yugandhara Kate, MDNashua, NH 030601528544236
- Timothy Marquis, MDNashua, NH 030601093334872
- Gautami Rao, M.D.,Nashua, NH 030601497862569
- Hassan Yameen, M.D.Nashua, NH 030601922350883
- Ananta Bhatt, M.D.Nashua, NH 030631295025435
- Han-Ting Lin, MDSalem, NH 030791114019148
Common questions
What is Mary Voltz, M.D.'s NPI number?
Mary Voltz, M.D.'s National Provider Identifier (NPI) is 1578540670, issued on Dec 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mary Voltz, M.D. located?
The NPPES record lists a practice address at 166 Kinsley St, Nashua, NH, 03060. Phone: (603) 880-3408. Providers update this record themselves, so call before visiting.
How can I verify Mary Voltz, M.D.'s license?
NPPES lists New Hampshire license number 9957, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Voltz, M.D. prescribe under Medicare Part D?
In 2024, Mary Voltz, M.D. had 326 Medicare Part D claims for 93 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Mary Voltz, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.9 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.