Christopher Clark, M.D.
NPI 1639123995 · Allergy & Immunology Physician · Gallipolis, OH
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Clark, M.D. is a Allergy & Immunology Physician provider in Gallipolis, OH (NPI 1639123995).
Provider details
- NPI number
- 1639123995
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 21461 (WV)
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 tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,097 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 1,799 | $3 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 506 | $3 |
| Test for Allergy Using Allergenic Extract Injected Into Skin95024 | 490 | $1 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 119 | $93 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 76 | $92 |
| Test to Measure Expiratory Airflow and Volume94010 | 46 | $8 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levocetirizine Dihydrochloride | 260 | 70 |
| Hydroxyzine Hcl | 237 | 66 |
| Montelukast Sodium | 211 | 50 |
| Fluticasone Propionate | 201 | 82 |
| Azelastine Hcl | 164 | 63 |
| Ipratropium Bromide | 99 | 42 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 97 | 50 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$33 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-20
- Last updated
- 2021-01-21
- Certified
- 2021-01-21
Frequently asked questions
- What is Christopher Clark's NPI number?
- Christopher Clark's National Provider Identifier (NPI) is 1639123995, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Clark's specialty?
- Christopher Clark is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Clark located?
- Christopher Clark's practice location on file with NPPES is 100 Jackson Pike, Gallipolis, OH 45631-1560.
- What is Christopher Clark's phone number?
- The practice phone number listed in the NPPES registry for Christopher Clark is (740) 446-5360.
- Does Christopher Clark accept Medicare?
- Christopher Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Clark's NPI active?
- Yes — Christopher Clark's NPI (1639123995) is active in the NPPES registry as of the last update on 2021-01-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.