Stephen Karp, DO
NPI 1881155877 · Pain Medicine (Anesthesiology) Physician · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Karp, DO is a Pain Medicine (Anesthesiology) Physician provider in Scottsdale, AZ (NPI 1881155877).
Provider details
- NPI number
- 1881155877
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Anesthesiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 285433 (MA)
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 tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
587 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 260 | $121 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 121 | $61 |
| Testing for Presence of Drug, By Chemistry Analyzers80307 | 87 | $60 |
| Drug Test(s), Definitive, Utilizing (1) Drug Identification Methods Able to Identify Individual Drugs and Distinguish Between Structural Isomers (but Not Necessarily Stereoisomers), Including, But Not Limited to Gc/Ms (any Type, Single Or Tandem) and Lc/MsG0481 | 75 | $148 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 22 | $81 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 337 | 158 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 234 | 101 |
| Gabapentin | 224 | 91 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 125 | 72 |
| Pregabalin | 115 | 68 |
| Cyclobenzaprine Hcl | 92 | 51 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$858 across 34 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
Additional practice locations (1)
- 736 Cambridge StBrighton, MA 02135-2907Phone: (617) 789-3000
Registry dates
- Enumerated
- 2019-03-31
- Last updated
- 2024-05-10
- Certified
- 2024-05-09
Frequently asked questions
- What is Stephen Karp's NPI number?
- Stephen Karp's National Provider Identifier (NPI) is 1881155877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Karp's specialty?
- Stephen Karp is listed in the NPPES registry with a primary specialty of Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Karp located?
- Stephen Karp's practice location on file with NPPES is 9500 E Ironwood Square Dr Ste 125, Scottsdale, AZ 85258-4582.
- What is Stephen Karp's phone number?
- The practice phone number listed in the NPPES registry for Stephen Karp is (928) 852-2540.
- Does Stephen Karp accept Medicare?
- Stephen Karp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Karp's NPI active?
- Yes — Stephen Karp's NPI (1881155877) is active in the NPPES registry as of the last update on 2024-05-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.