Enrique Riddle, MD
Family Practice · Palo Alto
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 1
- 1 carrier
- Offices
- 3
Offices
3 locations · Sutter Bay Medical Foundation · 3,783 clinicians in this group
Plans that list them
1 plan · 1 carrier
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Riddle’s office to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
| DualConnect (HMO D-SNP) | Santa Clara Family Health Plan | Listed | Sep 1, 2026 |
California Medical Board record
Licence A175421 · Current
Licensed to practise in California · since 2021 · expires 2027-11-30 · Tulane University School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$45,925
Medicare paid this office $45,925 for 339 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Return visit (30+ min) | 110 | $13,747 | $119 |
| Long return visit (40+ min) | 73 | $12,378 | $167 |
| Short return visit (20+ min) | 56 | $4,260 | $72 |
| New patient visit (30+ min) | 40 | $3,357 | $84 |
| Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus | 17 | $2,376 | $140 |
See all 11 services
| Return visit (30+ min) | 110 | $13,747 | $119 |
| Long return visit (40+ min) | 73 | $12,378 | $167 |
| Short return visit (20+ min) | 56 | $4,260 | $72 |
| New patient visit (30+ min) | 40 | $3,357 | $84 |
| Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus | 17 | $2,376 | $140 |
| New patient visit (60+ min) | 11 | $2,125 | $193 |
| New patient visit (15+ min) | 31 | $1,970 | $64 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | 14 | $1,014 | $68 |
| Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) | 13 | $211 | $16 |
| Automated urinalysis test | 27 | $59 | $2 |
| Injection, ceftriaxone sodium, per 250 mg | 14 | $20 | None |
Procedures Medicare counted
| Removal of nail tissue | 1-10 | None |
Who their Medicare patients are
339 Original Medicare patients in 2024. Average age 78 · Women 58% · Also on Medicaid 5% · Health risk score 0.91. At or below the middle of the specialty; the typical family practice clinician is at 1.13.
Conditions among them: High blood pressure 57% · Coronary heart disease 24% · Atrial fibrillation 21% · Cancer 19% · Chronic kidney disease 16% · Depression 15% · Diabetes 13% · Heart failure 11% · COPD 7% · Dementia 7% · Stroke 4%.
The office billed $161,818, Medicare allowed $61,501 and paid $45,925; for 2,705 services of 44 kinds; $182 of it was for drugs given in the office and $45,744 for care.
Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.
Year by year
| 2024 | 339 | 2,705 | 78 | 0.91 | $161,818 | $45,925 |
| 2023 | 336 | 3,135 | 78 | 0.97 | $187,307 | $54,250 |
| 2022 | 163 | 568 | 79 | 0.94 | $101,125 | $30,470 |
Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.
See the services billed each year
2023: 10 services
| Long return visit (40+ min) | 176 | $29,735 | $162 |
| Return visit (30+ min) | 64 | $7,172 | $112 |
| New patient visit (45+ min) | 29 | $3,681 | $127 |
| New patient visit (30+ min) | 40 | $3,610 | $90 |
| New patient visit (60+ min) | 14 | $2,562 | $183 |
| Short return visit (20+ min) | 16 | $1,391 | $87 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | 16 | $1,354 | $68 |
| Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | 22 | $1,106 | $50 |
| Automated urinalysis test | 30 | $66 | $2 |
| Injection, ceftriaxone sodium, per 250 mg | 16 | $37 | None |
2022: 9 services
| Long return visit (40+ min) | 85 | $15,117 | $174 |
| Return visit (30+ min) | 26 | $2,877 | $111 |
| New patient visit (60+ min) | 13 | $2,697 | $207 |
| New patient visit (45+ min) | 14 | $2,202 | $157 |
| Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 25 | $2,007 | $30 |
| New patient visit (30+ min) | 11 | $1,119 | $102 |
| Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | 16 | $804 | $50 |
| Automated urinalysis test | 20 | $44 | $2 |
| Injection, ceftriaxone sodium, per 250 mg | 11 | $18 | None |
Drugs they prescribed that Part D paid
$6,385
Pharmacies billed $6,385 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
154 generic and fewer than 11 brand-name prescriptions · $6,385 in drug cost · 80 antibiotic prescriptions to 76 people.
Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.
| Paxlovid | 16 | $2,873 | $180 |
| Albuterol Sulfate Hfa | 12 | $285 | $24 |
| Cephalexin | 24 | $148 | $6 |
| Amoxicillin-Clavulanate Potass | 16 | $86 | $5 |
| Azithromycin | 18 | $53 | $3 |
Year by year
| 2024 | 193 | 154 | None | None | $6,385 |
| 2023 | 189 | 156 | None | 12% | $5,044 |
| 2022 | 66 | 59 | None | None | $1,757 |
| 2021 | 118 | 16 | 0% (0) | 12% | $7,763 |
| 2020 | 237 | 37 | None | 14% | $16,646 |
| 2019 | 105 | 28 | 0% (0) | None | $4,742 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 5 drugs
| Albuterol Sulfate Hfa | 14 | $373 | $27 |
| Paxlovid (Eua) | 19 | $181 | $10 |
| Amoxicillin-Clavulanate Potass | 17 | $173 | $10 |
| Nitrofurantoin Mono-Macro | 11 | $169 | $15 |
| Cephalexin | 27 | $149 | $6 |
2022: 1 drug
| Cephalexin | 13 | $88 | $7 |
2021: 1 drug
| Tamsulosin | 14 | $184 | $13 |
2020: 8 drugs
| Myrbetriq | 12 | $5,098 | $425 |
| Pentoxifylline | 12 | $288 | $24 |
| Atorvastatin | 11 | $248 | $23 |
| Lisinopril | 16 | $225 | $14 |
| Tamsulosin | 17 | $217 | $13 |
| Olanzapine | 11 | $211 | $19 |
| Metformin | 14 | $68 | $5 |
| Carvedilol | 18 | $51 | $3 |
Money from drug and device companies
$13 in 2019
A payment is not proof that care is biased.
| Merck Sharp & Dohme | Nexplanon | $13 | 1 payment
|
See the published payment
| Merck Sharp & Dohme | Meals · 2019-01-31 | Nexplanon | $13 |
Professional record
- NPI
- 1083103188
- Licence
- CA A175421, OR PG188840California A175421: Current · expires 2027-11-30
- Gender
- Male
More record details
- Sole proprietor
- No
- Taxonomy
- Family medicine (207Q00000X)
- Mailing address
- 325 Distel Cir, Los Altos, CA, 94022
- NPI first listed
- 2018-05-03
- NPI last updated
- 2025-06-05
- NPI record certified
- 2025-06-05
This is when the NPI record was last certified, not a medical board exam.