Wookjin Chun, M.D.
NPI 1689688699 · Internal Medicine Physician · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Wookjin Chun, M.D. is a Internal Medicine Physician provider in Scottsdale, AZ (NPI 1689688699).
Provider details
- NPI number
- 1689688699
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 35822 (AZ)
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
472 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 289 | $103 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 92 | $147 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 53 | $174 |
| Nursing Facility Discharge Management, More Than 30 Minutes99316 | 38 | $125 |
Typical Medicare-allowed amounts for these services range $103–$174 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 98 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 240 | 62 |
| Atorvastatin Calcium | 228 | 89 |
| Oxycodone Hcl | 169 | 52 |
| Losartan Potassium | 141 | 47 |
| Furosemide | 130 | 50 |
| Tamsulosin Hcl | 105 | 29 |
| Metoprolol Tartrate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-27
- Last updated
- 2022-03-28
- Certified
- 2022-03-28
Frequently asked questions
- What is Wookjin Chun's NPI number?
- Wookjin Chun's National Provider Identifier (NPI) is 1689688699, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Wookjin Chun's specialty?
- Wookjin Chun is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Wookjin Chun located?
- Wookjin Chun's practice location on file with NPPES is 9590 E Ironwood Square Dr Ste 125, Scottsdale, AZ 85258-4583.
- What is Wookjin Chun's phone number?
- The practice phone number listed in the NPPES registry for Wookjin Chun is (480) 455-3000.
- Does Wookjin Chun accept Medicare?
- Wookjin Chun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Wookjin Chun's NPI active?
- Yes — Wookjin Chun's NPI (1689688699) is active in the NPPES registry as of the last update on 2022-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.