Duc DO, M.D.
NPI 1336136951 · Endocrinology, Diabetes & Metabolism Physician · Newport Beach, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Duc DO, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Newport Beach, CA (NPI 1336136951).
Provider details
- NPI number
- 1336136951
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A70134 (CA)
Specialties & taxonomies
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
2,397 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 1,538 | $181 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 307 | $15 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 307 | $130 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 210 | $34 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 35 | $221 |
Typical Medicare-allowed amounts for these services range $15–$221 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 80 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 512 | 136 |
| Semaglutidebrand: Ozempic | 290 | 56 |
| Metformin Hclbrand: Metformin Hcl Er | 281 | 82 |
| Liothyronine Sodium | 217 | 65 |
| Levothyroxine Sodiumbrand: Synthroid | 205 | 56 |
| Rosuvastatin Calcium | 182 | 57 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,390 across 65 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
- 2005-09-29
- Last updated
- 2019-08-06
Frequently asked questions
- What is Duc DO's NPI number?
- Duc DO's National Provider Identifier (NPI) is 1336136951, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Duc DO's specialty?
- Duc DO is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Duc DO located?
- Duc DO's practice location on file with NPPES is 355 Placentia Ave Ste 207a, Newport Beach, CA 92663-3302.
- What is Duc DO's phone number?
- The practice phone number listed in the NPPES registry for Duc DO is (949) 574-4114.
- Does Duc DO accept Medicare?
- Duc DO is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Duc DO's NPI active?
- Yes — Duc DO's NPI (1336136951) is active in the NPPES registry as of the last update on 2019-08-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.