Quick answers
- Does Grammy Huayhua accept Medicare assignment?
- Yes. Medicare's clinician data says Grammy Huayhua accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Grammy Huayhua see?
- In 2024, CMS data shows 59 Original Medicare patients and 62 services for Grammy Huayhua. This counts Original Medicare only and measures volume, not quality.
- What is Grammy Huayhua's NPI number?
- 1043853732. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Grammy Huayhua, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 59 |
|---|---|
| Services billed to Medicare | 62 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 68 |
Most frequent services
- Emergency department visit with moderate level of medical decision making (99284)36 services
- Emergency department visit with low level of medical decision making (99283)12 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol73%
- Diabetes53%
- Arthritis51%
- Anxiety34%
- Depression32%
Hospitals where Grammy Huayhua works
Medicare's Facility Affiliation Data lists Grammy Huayhua at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Whittier Hospital Medical CenterWhittier, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050735
Practice locations
Addresses where Grammy Huayhua is enrolled with Medicare (CMS data updated October 2, 2026).
- 411 N Lakeview AveAnaheim, CA 92807 (714) 279‑4000
- 5475 E La Palma AveAnaheim, CA 92807 (714) 279‑6088
- 900 S Atlantic BlvdMonterey Park, CA 91754 (877) 346‑2211
- 9080 Colima RdWhittier, CA 90605 (877) 346‑2211
Group practices
Medicare enrollment lists Grammy Huayhua as a member of these groups (CMS data updated October 2, 2026).
- Southern California Permanente Medical Group11,293 clinicians in the group
- Gem Medical Group Corporation57 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Anaheim
Clinicians with the same Medicare primary specialty in Anaheim, CA — not a recommendation.
Other clinicians in Southern California Permanente Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1043853732 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians