Ying Guo
NPI 1871054338 · Family Medicine Physician · Sunnyvale, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ying Guo is a Family Medicine Physician provider in Sunnyvale, CA (NPI 1871054338).
Provider details
- NPI number
- 1871054338
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 20A19933 (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
7 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
428 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 191 | $155 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 104 | $19 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 57 | $157 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $111 |
| Administration of Influenza Virus VaccineG0008 | 17 | $39 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 141 | 43 |
| Amlodipine Besylate | 99 | 33 |
| Losartan Potassium | 64 | 20 |
| Simvastatin | 60 | 15 |
| Levothyroxine Sodium | 52 | 15 |
| Metformin Hclbrand: Metformin Hcl Er | 41 | 13 |
| Lisinopril |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$274 across 3 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
- 2019-03-27
- Last updated
- 2022-11-03
- Certified
- 2022-11-03
Frequently asked questions
- What is Ying Guo's NPI number?
- Ying Guo's National Provider Identifier (NPI) is 1871054338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ying Guo's specialty?
- Ying Guo is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ying Guo located?
- Ying Guo's practice location on file with NPPES is 301 Old San Francisco Rd, Sunnyvale, CA 94086-6386.
- What is Ying Guo's phone number?
- The practice phone number listed in the NPPES registry for Ying Guo is (408) 730-4262.
- Does Ying Guo accept Medicare?
- Ying Guo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ying Guo's NPI active?
- Yes — Ying Guo's NPI (1871054338) is active in the NPPES registry as of the last update on 2022-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.