Rex Tjoa, NP
NPI 1568979417 · Nurse Practitioner · Long Beach, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rex Tjoa, NP is a Nurse Practitioner provider in Long Beach, CA (NPI 1568979417).
Provider details
- NPI number
- 1568979417
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Male
- Sole proprietor
- No
- License
- NP95007349 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 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
1,086 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 436 | $84 |
| 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 | 311 | $15 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 174 | $118 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 111 | $13 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 54 | $6 |
Typical Medicare-allowed amounts for these services range $6–$118 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 312 | 135 |
| Amlodipine Besylate | 291 | 115 |
| Carvedilol | 249 | 95 |
| Apixabanbrand: Eliquis | 222 | 76 |
| Furosemide | 210 | 78 |
| Metoprolol Succinate | 197 | 96 |
| Losartan Potassium | 184 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,452 across 36 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
- 2018-01-01
- Last updated
- 2026-04-28
- Certified
- 2026-04-28
Frequently asked questions
- What is Rex Tjoa's NPI number?
- Rex Tjoa's National Provider Identifier (NPI) is 1568979417, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rex Tjoa's specialty?
- Rex Tjoa is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Rex Tjoa located?
- Rex Tjoa's practice location on file with NPPES is 3828 Schaufele Ave Ste 250, Long Beach, CA 90808-0016.
- What is Rex Tjoa's phone number?
- The practice phone number listed in the NPPES registry for Rex Tjoa is (657) 241-9051.
- Does Rex Tjoa accept Medicare?
- Rex Tjoa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rex Tjoa's NPI active?
- Yes — Rex Tjoa's NPI (1568979417) is active in the NPPES registry as of the last update on 2026-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.