Michael Dao, M.D.
NPI 1437321932 · Internal Medicine Physician · Garden Grove, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Dao, M.D. is a Internal Medicine Physician provider in Garden Grove, CA (NPI 1437321932).
Provider details
- NPI number
- 1437321932
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A51334 (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
18 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
13,238 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) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 5,125 | $67 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 4,119 | $99 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 967 | $139 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 879 | $16 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 754 | $59 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 297 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 2,477 | 753 |
| Losartan Potassium | 2,144 | 658 |
| Amlodipine Besylate | 1,689 | 526 |
| Pantoprazole Sodium | 1,531 | 459 |
| Montelukast Sodium | 1,516 | 384 |
| Gabapentin | 1,291 | 331 |
| Famotidine |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,580 across 302 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
- 2008-03-25
- Last updated
- 2008-03-25
Frequently asked questions
- What is Michael Dao's NPI number?
- Michael Dao's National Provider Identifier (NPI) is 1437321932, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Dao's specialty?
- Michael Dao is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Dao located?
- Michael Dao's practice location on file with NPPES is 9191 Westminster Ave, Garden Grove, CA 92844-2751.
- What is Michael Dao's phone number?
- The practice phone number listed in the NPPES registry for Michael Dao is (714) 899-2000.
- Does Michael Dao accept Medicare?
- Michael Dao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Dao's NPI active?
- Yes — Michael Dao's NPI (1437321932) is active in the NPPES registry as of the last update on 2008-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.