Doctor profile · Federal record
Dr. Margaret Lo, M.D.
Family Medicine Physician (CMS: Family Practice) · Sports Medicine (Family Medicine) Physician · Los Altos, CA
- NPI 1174653992
- Accepts Medicare
- 22 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
370 Distel Cir
Los Altos, CA 940221404
(650) 254-5200 - Mailing address
-
325 Distel Cir
Los Altos, CA 940221408
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- May 27, 2020
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- California #A95854
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1174653992. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
198
Distinct HCPCS
3
Medicare allowed
$25,245
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 128 | 113 | $111 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 36 | 28 | $156 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 34 | 34 | $160 |
In context: peer comparison
Among 10 peers in this city , average services per provider: 53. This provider delivers 3.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
354
Patients
66
Total drug cost
$6,305
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 50 | 15 | $664 |
| Amlodipine Besylate | Generic | 43 | 12 | $686 |
| Paxlovid (Eua) (Nirmatrelvir/Ritonavir) | Brand | 39 | 39 | $390 |
| Losartan Potassium | Generic | 27 | 0 | $666 |
| Hydrochlorothiazide | Generic | 26 | 0 | $206 |
| Rosuvastatin Calcium | Generic | 22 | 0 | $1,349 |
| Metoprolol Succinate | Generic | 21 | 0 | $404 |
| Alendronate Sodium | Generic | 18 | 0 | $222 |
| Metformin Hcl | Generic | 18 | 0 | $116 |
| Zolpidem Tartrate | Generic | 18 | 0 | $177 |
Frequently asked questions
What is Dr. Margaret Lo's medical specialty?
Dr. Margaret Lo practices Family Medicine Physician in Los Altos, CA.
Where does Dr. Margaret Lo practice?
Dr. Margaret Lo practices at 370 Distel Cir, Los Altos, CA 940221404. Office phone: 6502545200.
What is Dr. Margaret Lo's NPI?
Dr. Margaret Lo's National Provider Identifier (NPI) is 1174653992, issued by NPPES.
Does Dr. Margaret Lo accept Medicare assignment?
Yes. Dr. Margaret Lo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Margaret Lo commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.