Shaun Carstairs, M.D.
NPI 1255301602 · Emergency Medicine Physician · Chula Vista, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shaun Carstairs, M.D. is a Emergency Medicine Physician provider in Chula Vista, CA (NPI 1255301602).
Provider details
- NPI number
- 1255301602
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 326862 (LA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
207 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 61 | $8 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 56 | $173 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 40 | $120 |
| Critical Care, First 30-74 Minutes99291 | 23 | $213 |
| X-Ray of Chest, 1 View71045 | 15 | $9 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 12 | $71 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 22 | 22 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 22 | 22 |
| Naproxen | 14 | 14 |
| Ondansetron Hcl | 11 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$156 across 1 record (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 (2)
- 3020 Childrens WaySan Diego, CA 92123-4223Phone: (858) 966-8800
- 323 W Walnut AveBastrop, LA 71220-4521Phone: (318) 283-3600Fax: (318) 283-3600
Registry dates
- Enumerated
- 2006-01-26
- Last updated
- 2025-05-28
- Certified
- 2025-05-28
Frequently asked questions
- What is Shaun Carstairs's NPI number?
- Shaun Carstairs's National Provider Identifier (NPI) is 1255301602, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shaun Carstairs's specialty?
- Shaun Carstairs is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Shaun Carstairs located?
- Shaun Carstairs's practice location on file with NPPES is 435 H St, Chula Vista, CA 91910-4307.
- What is Shaun Carstairs's phone number?
- The practice phone number listed in the NPPES registry for Shaun Carstairs is (619) 691-7290.
- Does Shaun Carstairs accept Medicare?
- Shaun Carstairs is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shaun Carstairs's NPI active?
- Yes — Shaun Carstairs's NPI (1255301602) is active in the NPPES registry as of the last update on 2025-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.