Grace Chan, MD
NPI 1023027729 · Endocrinology, Diabetes & Metabolism Physician · Palo Alto, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Chan, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Palo Alto, CA (NPI 1023027729).
Provider details
- NPI number
- 1023027729
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A104102 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
449 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 230 | $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 | 81 | $19 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 55 | $18 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 46 | $111 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 21 | $200 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Alendronate Sodium | 168 | 48 |
| Levothyroxine Sodium | 103 | 27 |
| Empagliflozinbrand: Jardiance | 84 | 19 |
| Levothyroxine Sodiumbrand: Synthroid | 82 | 22 |
| Metformin Hclbrand: Metformin Hcl Er | 81 | 22 |
| Semaglutidebrand: Ozempic | 77 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-05
- Last updated
- 2020-05-27
- Certified
- 2020-05-27
Frequently asked questions
- What is Grace Chan's NPI number?
- Grace Chan's National Provider Identifier (NPI) is 1023027729, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Chan's specialty?
- Grace Chan is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Grace Chan located?
- Grace Chan's practice location on file with NPPES is 795 El Camino Real, Palo Alto, CA 94301-2302.
- What is Grace Chan's phone number?
- The practice phone number listed in the NPPES registry for Grace Chan is (650) 853-2976.
- Does Grace Chan accept Medicare?
- Grace Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Chan's NPI active?
- Yes — Grace Chan's NPI (1023027729) is active in the NPPES registry as of the last update on 2020-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.