Constantine Melitas, M.D.
NPI 1154731321 · Gastroenterology Physician · Santa Maria, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Constantine Melitas, M.D. is a Gastroenterology Physician provider in Santa Maria, CA (NPI 1154731321).
Provider details
- NPI number
- 1154731321
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A167829 (CA)
Specialties & taxonomies
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
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
7 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,076 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 | 138 | $141 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 114 | $182 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 84 | $43 |
| Ultrasound Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43259 | 84 | $199 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 76 | $240 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 114 | 39 |
| Famotidine | 36 | 12 |
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.
$720 across 17 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 (6)
- 850 Fair Oaks Ave Ste 220Arroyo Grande, CA 93420-3929Phone: (805) 434-5530
- 1304 Ella St Ste aSan Luis Obispo, CA 93401-4165Phone: (805) 549-9555Fax: (805) 549-0444
- 316 S Stratford Ave Ste BSanta Maria, CA 93454-5908Phone: (805) 332-8446
- 350 Posada Ln Ste 202Templeton, CA 93465-4060Phone: (805) 434-5497Fax: (805) 434-0917
- 2650 Ridge AvenueEvanston, IL 60201Phone: (847) 570-2509
- 16001 W 9 Mile RdSouthfield, MI 48075-4818Phone: (248) 849-3000
Registry dates
- Enumerated
- 2014-04-28
- Last updated
- 2024-10-02
- Certified
- 2024-10-02
Frequently asked questions
- What is Constantine Melitas's NPI number?
- Constantine Melitas's National Provider Identifier (NPI) is 1154731321, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Constantine Melitas's specialty?
- Constantine Melitas is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Constantine Melitas located?
- Constantine Melitas's practice location on file with NPPES is 1325 E Church St Ste 202, Santa Maria, CA 93454-5915.
- What is Constantine Melitas's phone number?
- The practice phone number listed in the NPPES registry for Constantine Melitas is (805) 346-3456.
- Does Constantine Melitas accept Medicare?
- Constantine Melitas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Constantine Melitas's NPI active?
- Yes — Constantine Melitas's NPI (1154731321) is active in the NPPES registry as of the last update on 2024-10-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.