Dr. Enrique Riddle, MD
- Medicare services, 2024
- 463
- Medicare patients, 2024
- 339
- Part D claims, 2024
- 193
- Industry payments
- $13
- Affiliated sites
- 2
- Practice address
- 795 El Camino Real, Palo Alto, CA 94301
- Practice phone
- Call (650) 324-1832
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Surgery Center Palo Alto
Surgery Center - Medicare-Certified · Palo Alto, California
Find Dr. Riddle's professional email, personal email and mobile number
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Dr. Enrique Riddle is an internist in Palo Alto, California
Dr. Riddle practices at Surgery Center Palo Alto in Palo Alto, California.
Dr. Riddle's NPI, 1083103188, was assigned on May 3, 2018. Dr. Riddle holds California license A175421.
- NPI
- 1083103188NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729335997
- NPI enumeration date
- May 3, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 324-1832
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Enrique Riddle practices at Surgery Center Palo Alto in Palo Alto, California
Dr. Riddle's primary practice is Surgery Center Palo Alto, at 795 El Camino Real, Palo Alto, CA 94301. The practice phone is (650) 324-1832.
- Surgery Center Palo Alto795 El Camino Real, Palo Alto, CA 94301Phone(650) 324-1832
Source: Dmand AI Affiliation Data
Dr. Enrique Riddle is affiliated with 2 sites of care and 1 medical group
Dr. Riddle's primary practice is Surgery Center Palo Alto in Palo Alto, California. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Dr. Riddle to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Enrique Riddle's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Riddle practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Surgery Center Palo Alto | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Enrique Riddle is one of 16,751 internists in California
Internal medicine is Dr. Riddle's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Riddle's licenses on file in 2 states: California and Oregon.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Student in an organized health care education/training program, Oregon
Internists near Dr. Riddle
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Enrique Riddle billed Medicare for 463 services in 2024
CMS data shows 463 Medicare services from Dr. Riddle across 11 procedure codes in 2024, for 339 Medicare patients. Medicare paid $41,518 for them. Every service was in an office.
Dr. Riddle's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3472024: 3315%
- Drugs given in the office
- 2023: 922024: 6035%
- Lab and pathology
- 2023: 522024: 5710%
- Tests and treatments
- 2023: 202024: 1525%
Dr. Riddle compared with the California median for internists, 2024
- Dr. Riddle
- California median
- Medicare services
- 463vs 36128% above
- Medicare patients
- 339vs 1512.2 times
- Part D claims
- 87vs 42179% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Riddle's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Enrique Riddle treated 339 Medicare patients in 2024, average age 78
CMS counts 339 Medicare patients who saw Dr. Riddle in 2024. The largest group is 75 to 84, with 143 patients. 70% of them have high cholesterol, and 57% have high blood pressure. 5% are also on Medicaid. Their average risk score is 0.91, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Riddle's median patient age at 56, with 56% women.
Dr. Riddle's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Riddle's Medicare patients by sex, 2024
- Women19758%
- Men14242%
Chronic conditions among Dr. Riddle's Medicare patients, 2024
- High cholesterol70%
- High blood pressure57%
- Arthritis38%
- Osteoporosis27%
- Ischemic heart disease24%
- Atrial fibrillation21%
- Cancer19%
- Mood disorders17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Riddle's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Enrique Riddle wrote 193 Medicare Part D claims in 2024
In 2024, Dr. Riddle wrote 193 Medicare Part D claims for 154 patients. 80% of them were for generic drugs. CMS names the drug for 87 of them, across 5 drugs with 11 or more claims each, at $3,445 in total drug cost. In 2023, CMS named 88 claims across 5 drugs.
Dr. Riddle's Part D claims by kind of drug, 2024
- Generic154 claims80%
- Brand-name and other39 claims20%
Dr. Riddle's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Riddle's Part D claims, 2024
- Antibiotics41%80 of 193 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 882024: 871%
Drugs named by CMS: 5 in 2024, 5 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Enrique Riddle takes part in Medicare
Dr. Riddle accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Enrique Riddle received $13 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Riddle from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $13.
Companies that paid Dr. Riddle the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Enrique Riddle's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Enrique Riddle
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Enrique Riddle's NPI number?
Dr. Enrique Riddle's NPI number is 1083103188. It was assigned on May 3, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Enrique Riddle?
Dr. Enrique Riddle is an internist in Palo Alto, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Enrique Riddle practice?
Dr. Riddle practices at 795 El Camino Real, Palo Alto, CA 94301. Dr. Riddle's primary practice is Surgery Center Palo Alto in Palo Alto, California. Dmand AI also links Dr. Riddle to 1 group practice or clinic.
What is Dr. Enrique Riddle's office phone number?
The practice phone on file for Dr. Riddle is (650) 324-1832.
What is Dr. Enrique Riddle's medical license number?
Dr. Riddle holds California license A175421, one of the licenses on file in 2 states.
Which states has Dr. Enrique Riddle been licensed in?
Dmand AI has state licenses on file for Dr. Riddle in California and Oregon.
What medical group is Dr. Enrique Riddle part of?
Dr. Riddle is linked to Palo Alto Foundation Medical Group.
Does Dr. Enrique Riddle accept Medicare?
Yes. CMS data shows Dr. Riddle billed Medicare for 463 services in 2024, and Dr. Riddle accepts Medicare assignment.
How many Medicare patients does Dr. Enrique Riddle see?
CMS counts 339 Medicare patients who saw Dr. Riddle in 2024, with an average age of 78.
What services does Dr. Enrique Riddle bill to Medicare?
In 2024, Dr. Riddle's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and injected or infused drug (J0696).
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What drugs does Dr. Enrique Riddle prescribe most?
In 2024 Medicare Part D data, Dr. Riddle's most prescribed drugs by claims were Cephalexin, Azithromycin and Amoxicillin-Clavulanate Potass.
Has Dr. Enrique Riddle received payments from drug or device companies?
CMS Open Payments shows $13 in general payments to Dr. Riddle from 1 company from 2019 to 2019. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Enrique Riddle been practicing?
Dr. Riddle graduated from medical school in 2017, 9 years ago.
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