Hyung Ryu, MD
NPI 1508929506 · Gynecologic Oncology Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Gynecological Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hyung Ryu, MD is a Gynecologic Oncology Physician provider in Baltimore, MD (NPI 1508929506).
Provider details
- NPI number
- 1508929506
- Entity type
- Individual
- Primary specialty
- Gynecologic Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D68702 (MD)
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
19 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
550 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 | 293 | $97 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 104 | $28 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 61 | $130 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 29 | $130 |
| Biopsy of Lining of Uterus And/Or Removal of Polyp Using an Endoscope58558 | 15 | $237 |
| Biopsy of Lining of Uterus58100 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 27 | 17 |
| Clobetasol Propionate | 14 | — |
| Fluconazole | 13 | 11 |
| Metronidazole | 12 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$124 across 4 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
- 2006-12-19
- Last updated
- 2009-06-22
Frequently asked questions
- What is Hyung Ryu's NPI number?
- Hyung Ryu's National Provider Identifier (NPI) is 1508929506, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hyung Ryu's specialty?
- Hyung Ryu is listed in the NPPES registry with a primary specialty of Gynecologic Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Hyung Ryu located?
- Hyung Ryu's practice location on file with NPPES is 227 Saint Paul Pl, Baltimore, MD 21202-2001.
- What is Hyung Ryu's phone number?
- The practice phone number listed in the NPPES registry for Hyung Ryu is (410) 332-9200.
- Does Hyung Ryu accept Medicare?
- Hyung Ryu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hyung Ryu's NPI active?
- Yes — Hyung Ryu's NPI (1508929506) is active in the NPPES registry as of the last update on 2009-06-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.