Norman Chien, MD
NPI 1184696999 · Geriatric Medicine (Internal Medicine) Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Norman Chien, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Pasadena, CA (NPI 1184696999).
Provider details
- NPI number
- 1184696999
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A62136 (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
20 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
5,106 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) |
|---|---|---|
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 1,459 | $101 |
| Brief Communication Technology-Based Service, E.g. Virtual Check-In, By a Physician Or Other Qualified Health Care Professional Who Can Report Evaluation and Management Services, Provided to an Established Patient, Not Originating From a Related E/M ServicG2012 | 672 | $13 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 494 | $162 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 486 | $134 |
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 438 | $194 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 117 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 246 | 42 |
| Atorvastatin Calcium | 188 | 44 |
| Metformin Hcl | 150 | 32 |
| Mirtazapine | 136 | 26 |
| Amlodipine Besylate | 136 | 42 |
| Tamsulosin Hcl | 135 | 28 |
| Donepezil Hcl | 127 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$858 across 33 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
- 2006-02-06
- Last updated
- 2019-08-21
Frequently asked questions
- What is Norman Chien's NPI number?
- Norman Chien's National Provider Identifier (NPI) is 1184696999, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Norman Chien's specialty?
- Norman Chien is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Norman Chien located?
- Norman Chien's practice location on file with NPPES is 625 S Fair Oaks Ave, Pasadena, CA 91105-2665.
- What is Norman Chien's phone number?
- The practice phone number listed in the NPPES registry for Norman Chien is (626) 229-9865.
- Does Norman Chien accept Medicare?
- Norman Chien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Norman Chien's NPI active?
- Yes — Norman Chien's NPI (1184696999) is active in the NPPES registry as of the last update on 2019-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.