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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JONATHAN POLAK M.D.
NPI 1659750560
Internal Medicine in Wolfeboro, NH

Active since May 26, 2015PECOS Enrolled
56.99/100
CMS Quality Rating
55 MILL ST STE 101, WOLFEBORO, NH 03894(252) 722-3240 Get Directions Write a Review

NPPES record last updated: September 10, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 10, 2026, Apr 27, 2026, Dec 14, 2025 and 6 more (9 updates tracked since 2019).

About Jonathan Polak M.d. NPPES

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

JONATHAN POLAK M.D. (NPI 1659750560) is an individual internal medicine provider in Wolfeboro, New Hampshire, licensed in New Hampshire (19473) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1659750560
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJONATHAN POLAKCredential: M.D.
Location Address55 MILL ST STE 101Wolfeboro, NH 03894-4328
Mailing Address55 Mill St Ste 101Wolfeboro, NH 03894-4328 · (252) 722-3240
Phone(252) 722-3240
Sole ProprietorYes
Enumeration DateMay 26, 2015
Last NPPES UpdateSeptember 10, 20269 updates tracked since enumeration
NPPES CertifiedSeptember 10, 2026
✔ NPI 1659750560 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in NH · 19473✔ Licensed in CA · C194706
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
55 MILL ST STE 101, Wolfeboro, NH 03894
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include WellSense Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jonathan Polak 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

3

Medicare enrollment records show Jonathan Polak reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Genesis Eldercare Physician Services LLC
28 mi
Geriatric Medicine
239 PLEASANT ST, PLEASANT VIEW NURSING CENTER
Concord, NH 03301
  • Reassigned Medicare billing, New Hampshire enrollment
  • 42 clinicians in this Medicare group
NPI 1821011792 (603) 224-6561
Alignmed Medical Group, PC
400 mi
Geriatric Medicine
9200 FRANKLIN SQUARE DR
Baltimore, MD 21237
  • Reassigned Medicare billing, New Hampshire enrollment
  • 43 clinicians in this Medicare group
NPI 1366289423 (410) 391-2600
Alignmed Partners, PC
1,083 mi
Geriatric Medicine
420 DEAN DR
Gardendale, AL 35071
  • Reassigned Medicare billing, New Hampshire enrollment
  • 41 clinicians in this Medicare group
NPI 1881109452 (205) 631-8709

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

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
38 services28 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03894 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
$132.09 typical visit price
range $57.75 – $174.26
Typical copayment $33.02 (range $14.43 – $43.56)
Most-billed visit code 99204
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

56.99/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality51.92
Improvement Activities40
Cost44.8

Other Providers at the Same Location NPPES

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

DR. REBECCA OWEN DO
Internal Medicine
55 MILL ST STE 101
WOLFEBORO, NH 03894
Carroll County (603) 691-1285

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 Jonathan Polak's NPI number?

The NPI number for Jonathan Polak is 1659750560. It was assigned to this individual provider in the NPPES registry on May 26, 2015.

Where is Jonathan Polak located?

Jonathan Polak practices at 55 Mill St Ste 101, Wolfeboro, NH 03894. The listed phone number is (252) 722-3240.

What is Jonathan Polak's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Jonathan Polak enrolled in Medicare?

Yes. Jonathan Polak is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Jonathan Polak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jonathan Polak reassigns Medicare benefits to 3 organizations: Genesis Eldercare Physician Services LLC (Concord, NH), Alignmed Medical Group, PC (Baltimore, MD) and Alignmed Partners, PC (Gardendale, AL). 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 Jonathan Polak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jonathan Polak accept?

Health plans from WellSense Health Plan list Jonathan Polak as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Jonathan Polak was last updated on September 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.