Hai Sun Park, M.D.
NPI 1508805839 · Hematology & Oncology Physician · Englewood Cliffs, NJ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hai Sun Park, M.D. is a Hematology & Oncology Physician provider in Englewood Cliffs, NJ (NPI 1508805839).
Provider details
- NPI number
- 1508805839
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MA53599 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1,622 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 334 | $139 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 298 | $16 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 279 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 261 | $95 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 91 | $62 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 85 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 366 | 99 |
| Amlodipine Besylate | 230 | 63 |
| Metformin Hcl | 185 | 38 |
| Losartan Potassium | 179 | 47 |
| Icosapent Ethylbrand: Vascepa | 133 | 20 |
| Escitalopram Oxalate | 117 | 20 |
| Levothyroxine Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$968 across 50 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
- 2006-06-05
- Last updated
- 2019-03-21
Frequently asked questions
- What is Hai Sun Park's NPI number?
- Hai Sun Park's National Provider Identifier (NPI) is 1508805839, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hai Sun Park's specialty?
- Hai Sun Park is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Hai Sun Park located?
- Hai Sun Park's practice location on file with NPPES is 464 Hudson Ter Ste 200, Englewood Cliffs, NJ 07632-2917.
- What is Hai Sun Park's phone number?
- The practice phone number listed in the NPPES registry for Hai Sun Park is (201) 408-5442.
- Does Hai Sun Park accept Medicare?
- Hai Sun Park is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hai Sun Park's NPI active?
- Yes — Hai Sun Park's NPI (1508805839) is active in the NPPES registry as of the last update on 2019-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.