Christopher Yiachos, MD
NPI 1235690256 · Internal Medicine Physician · Concord, NH
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Yiachos, MD is a Internal Medicine Physician provider in Concord, NH (NPI 1235690256).
Provider details
- NPI number
- 1235690256
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 22352 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
331 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) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 307 | $128 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 24 | $169 |
Typical Medicare-allowed amounts for these services range $128–$169 (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
Additional practice locations (1)
- 475 Seaview AveStaten Island, NY 10305-3436Phone: (718) 226-9000
Registry dates
- Enumerated
- 2019-03-31
- Last updated
- 2025-08-01
- Certified
- 2025-08-01
Frequently asked questions
- What is Christopher Yiachos's NPI number?
- Christopher Yiachos's National Provider Identifier (NPI) is 1235690256, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Yiachos's specialty?
- Christopher Yiachos is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Yiachos located?
- Christopher Yiachos's practice location on file with NPPES is 250 Pleasant St Ste 6073, Concord, NH 03301-2598.
- What is Christopher Yiachos's phone number?
- The practice phone number listed in the NPPES registry for Christopher Yiachos is (603) 227-7000.
- Does Christopher Yiachos accept Medicare?
- Christopher Yiachos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Yiachos's NPI active?
- Yes — Christopher Yiachos's NPI (1235690256) is active in the NPPES registry as of the last update on 2025-08-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.