John Ham-Ying, M.D.
NPI 1780683870 · Family Medicine Physician · Deltona, FL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Ham-Ying, M.D. is a Family Medicine Physician provider in Deltona, FL (NPI 1780683870).
Provider details
- NPI number
- 1780683870
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- ME46938 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 75 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 183 | 71 |
| Lisinopril | 175 | 65 |
| Amlodipine Besylate | 135 | 60 |
| Metformin Hcl | 93 | 38 |
| Metoprolol Tartrate | 91 | 37 |
| Gabapentin | 86 | 33 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$468 across 25 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
- 2005-07-20
- Last updated
- 2024-07-22
- Certified
- 2024-07-22
Frequently asked questions
- What is John Ham-Ying's NPI number?
- John Ham-Ying's National Provider Identifier (NPI) is 1780683870, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ham-Ying's specialty?
- John Ham-Ying is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Ham-Ying located?
- John Ham-Ying's practice location on file with NPPES is 1200 Deltona Blvd Apt 40a, Deltona, FL 32725-6386.
- What is John Ham-Ying's phone number?
- The practice phone number listed in the NPPES registry for John Ham-Ying is (386) 202-6025.
- Does John Ham-Ying accept Medicare?
- John Ham-Ying is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Ham-Ying's NPI active?
- Yes — John Ham-Ying's NPI (1780683870) is active in the NPPES registry as of the last update on 2024-07-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.