Marc K. Dao, MD
Internal Medicine Physician · Escondido, CA
Marc K. Dao, MD is an internal medicine physician with a practice address in Escondido, California, and NPI 1467542175, issued on Oct 13, 2006. Check the license (California C142559, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marc K. Dao
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C142559 CA
N6851 TX
48006 WI
Self-reported in NPPES; status is on the state search - Practice location
- 332 S Juniper St, Escondido, CA 92025
- Phone
- (760) 291-6650
- Enumerated
- Oct 13, 2006
- Record last updated
- Nov 1, 2022
- Fax
- (760) 737-3430
- Medicaid IDs
- 34660200 WI
215615001 TX
215615003 TX
215615002 TX - Medicare enrollment
- Enrolled (PECOS I20160824000425); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2002
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Marc K. Dao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C142559Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,462 Medicare Part D claims for 308 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 27 claims were for opioids.
Most prescribed
- Atorvastatin Calcium108 claims
- Amlodipine Besylate89 claims
- Lisinopril72 claims
- Metformin Hcl71 claims
- Losartan Potassium66 claims
- Albuterol Sulfate Hfa35 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 72.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $120.56
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- 24 ON Physicians OF California PCEl Centro, CA
- Vista Community ClinicVista, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marc K. Dao among 17,696 internal medicine physician records in California
Marc K. Dao, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2002 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
44 internal medicine physician records list a practice address in Escondido
They are 44 of the 3,509 NPPES records with a practice address in Escondido, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Escondido → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rachel Bacon, M.DEscondido, CA 920251215963905
- Margaret Chen, M.DEscondido, CA 920251659305084
- Larry Chiang, MDEscandido, CA 920251912952524
- Mark Haberman, M.D.Escondido, CA 920251497780563
- Karin Kordas, M.D.Escondido, CA 920251043236292
- Lara Le, MDEscondido, CA 920251043239841
- Emmet Lee, M.D.Escondido, CA 920251558326801
- Richard Mallo, MDEscondido, CA 920251588699490
Common questions
What is Marc K. Dao, MD's NPI number?
Marc K. Dao, MD's National Provider Identifier (NPI) is 1467542175, issued on Oct 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marc K. Dao, MD located?
The NPPES record lists a practice address at 332 S Juniper St, Escondido, CA, 92025. Phone: (760) 291-6650. Providers update this record themselves, so call before visiting.
How can I verify Marc K. Dao, MD's license?
NPPES lists California license number C142559, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marc K. Dao, MD prescribe under Medicare Part D?
In 2024, Marc K. Dao, MD had 1,462 Medicare Part D claims for 308 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Marc K. Dao, MD's MIPS final score?
The 2023 MIPS final score is 72.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.