David Saul Deifik, MD
Obstetrics & Gynecology Physician · Nashua, NH
David Saul Deifik, MD is an obstetrics & gynecology physician with a practice address in Nashua, New Hampshire, and NPI 1205853199, issued on Jul 16, 2006. Check the license (New Hampshire 6822, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- David Saul Deifik
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 6822 NH
Self-reported in NPPES; status is on the state search - Practice location
- 22 Prospect St, Nashua, NH 03060
- Phone
- (603) 883-1626
- Enumerated
- Jul 16, 2006
- Record last updated
- Jul 21, 2026
- Fax
- (603) 816-1039
- Medicaid ID
- 49 NH
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 240 in New Hampshire → Look up another NPI →
Also registered at 22 Prospect St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Saul Deifik in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 6822Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
37 Medicare Part D claims for 14 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% 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.
David Saul Deifik among 240 obstetrics & gynecology physician records in New Hampshire
David Saul Deifik, MD is one of 240 obstetrics & gynecology physician records with a practice address in New Hampshire. 74% 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 18% of them.
- NPI issued2006 · 18% of these records are older, 45% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in New Hampshire
There are 240 obstetrics & gynecology physician records in New Hampshire.
All 240 in New Hampshire → Every provider in Nashua → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Monelle Bisson, MDNashua, NH 030601275527913
- Mark Conway, M.D.Nashua, NH 030601538145040
- Heather Feltmate, MDNashua, NH 030601972513810
- Rebecca Green, M.D.Nashua, NH 030601639139942
- Jeffrey Hubley, M.D.Nashua, NH 030601649297623
- Alyse Kanter, MDNashua, NH 030601518951250
- Janine Keever, M.D.Nashua, NH 030601952370488
- Kelly Macmillan, M.D.Nashua, NH 030601114903630
Common questions
What is David Saul Deifik, MD's NPI number?
David Saul Deifik, MD's National Provider Identifier (NPI) is 1205853199, issued on Jul 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Saul Deifik, MD located?
The NPPES record lists a practice address at 22 Prospect St, Nashua, NH, 03060. Phone: (603) 883-1626. Providers update this record themselves, so call before visiting.
How can I verify David Saul Deifik, MD's license?
NPPES lists New Hampshire license number 6822, 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 David Saul Deifik, MD prescribe under Medicare Part D?
In 2024, David Saul Deifik, MD had 37 Medicare Part D claims for 14 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.