Karen Nielsen, D.O.
NPI 1568651198 · General Practice Physician · New York, NY
Enrolled with Medicare as Practitioner - Osteopathic Manipulative Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Nielsen, D.O. is a General Practice Physician provider in New York, NY (NPI 1568651198).
Provider details
- NPI number
- 1568651198
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 248989 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
384 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 194 | $201 |
| Osteopathic Manipulative Treatment, 9-10 Body Regions98929 | 190 | $93 |
Typical Medicare-allowed amounts for these services range $93–$201 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-10-19
- Last updated
- 2024-07-14
- Certified
- 2024-07-14
Frequently asked questions
- What is Karen Nielsen's NPI number?
- Karen Nielsen's National Provider Identifier (NPI) is 1568651198, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Nielsen's specialty?
- Karen Nielsen is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Nielsen located?
- Karen Nielsen's practice location on file with NPPES is 115 W 29th St Rm 1105, New York, NY 10001-5462.
- What is Karen Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Karen Nielsen is (212) 206-6759.
- Does Karen Nielsen accept Medicare?
- Karen Nielsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Nielsen's NPI active?
- Yes — Karen Nielsen's NPI (1568651198) is active in the NPPES registry as of the last update on 2024-07-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.