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DR. DONALD MARK MAZANOWSKI M.D.
NPI 1609961069
Family Medicine in Keene, NH

Active since October 03, 2006PECOS Enrolled

NPPES record last updated: April 5, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Donald Mark Mazanowski M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DONALD MARK MAZANOWSKI M.D. (NPI 1609961069) is an individual family medicine provider in Keene, New Hampshire, licensed in New Hampshire (7917) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1609961069
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. DONALD MARK MAZANOWSKICredential: M.D.
Location Address590 COURT STKeene, NH 03431-1719
Mailing Address590 Court StKeene, NH 03431-1719 · (603) 354-5400
Phone(603) 354-5400
Sole ProprietorNo
Enumeration DateOctober 3, 2006
Last NPPES UpdateApril 5, 2012
✔ NPI 1609961069 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in NH · 7917
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
590 COURT ST, Keene, NH 03431
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Other Identifiers 3

Medicare PINBX6284NJ
Medicare UPINE11109NH
Medicaid30002439NH

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Donald Mark Mazanowski M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Donald Mazanowski reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cheshire Medical Center
Same address
Family Medicine
590 COURT ST
Keene, NH 03431
  • Reassigned Medicare billing, New Hampshire enrollment
  • 450 clinicians in this Medicare group
NPI 1306349444 (603) 354-5400
Dartmouth-Hitchcock Clinic
1.4 mi
Rehabilitation, Substance Use Disorder
24 RAILROAD ST
Keene, NH 03431
  • Reassigned Medicare billing, New Hampshire enrollment
  • Also billed through NPI 1386697803 (New Hampshire)
  • 2,999 clinicians in this Medicare group
NPI 1174176861 (603) 354-5400

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03431 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$89.14 typical visit price
range $57.75 – $174.26
Typical copayment $22.28 (range $14.43 – $43.56)
Most-billed visit code 99203
Established Patient
$101.54 typical visit price
range $18.70 – $142.15
Typical copayment $25.38 (range $4.67 – $35.53)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
3 suppliers11 claims11 services$21.97 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
2 suppliers16 claims96 services$2.60 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier18 claims18 services$119.44 avg. paid by Medicare
Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738
DME-Oxygen and Supplies · category DC000N
1 supplier12 claims12 services$38.23 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KRISTIE N LA MONICA PA
Physician Assistant (Medical)
590 COURT ST
KEENE, NH 03431
Cheshire County (603) 354-5496
DR. LESLIE THOMAS PITTS M.D.
Family Medicine
590 COURT ST
KEENE, NH 03431
Cheshire County (603) 354-5454
DR. HEIDI FEDRIZZI RINEHART MD
Obstetrics & Gynecology
590 COURT ST
KEENE, NH 03431
Cheshire County (603) 354-5400
MRS. JESSE R RIDGWAY CNM
Advanced Practice Midwife
590 COURT ST
KEENE, NH 03431
Cheshire County (603) 354-6534
DR. OLIVIER P VAN HOUTTE MD
Surgery
590 COURT ST
KEENE, NH 03431
Cheshire County (603) 354-5400
DR. MURPHY R NEENAN APRN
Nurse Practitioner (Family)
590 COURT ST
KEENE, NH 03431
Cheshire County (603) 354-5400
DR. PAUL C. BETTINGER M.D.
Orthopaedic Surgery (Hand Surgery)
590 COURT ST
KEENE, NH 03431
Cheshire County (603) 354-5454
MICHELE L PARR CRNA
Nurse Anesthetist, Certified Registered
590 COURT ST
KEENE, NH 03431
Cheshire County (603) 354-6534

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Donald Mazanowski's NPI number?

The NPI number for Donald Mazanowski is 1609961069. It was assigned to this individual provider in the NPPES registry on October 3, 2006.

Where is Donald Mazanowski located?

Donald Mazanowski practices at 590 Court St, Keene, NH 03431. The listed phone number is (603) 354-5400.

What is Donald Mazanowski's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Donald Mazanowski enrolled in Medicare?

Yes. Donald Mazanowski is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Donald Mazanowski's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Donald Mazanowski reassigns Medicare benefits to 2 organizations: Cheshire Medical Center (Keene, NH) and Dartmouth-Hitchcock Clinic (Keene, NH). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Donald Mazanowski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Donald Mazanowski was last updated on April 5, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.