NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1043661549 M.D.
Verify on CMS → Janina Paula Sy-Go, M.D.
Internal Medicine Physician in Honolulu, Hawaii.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in Internal Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
396
Medicare Part D claims · 94 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$796.23
31 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Janina Paula Sy-Go, M.D. filed 396 Medicare Part D claims in 2023 as a Internal Medicine Physician in Honolulu, Hawaii, prescribing 76% generic.
- 396
- Part D claims, 2023
- 76%
- generic prescribing
- $796.23
- industry payments (Sunshine Act)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Janina Paula Sy-Go, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
396 Top 43% higher than 57% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Janina Paula Sy-Go, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Janina Paula Sy-Go, M.D.?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
396 85% vs specialty avg
Specialty distribution in Hawaii
How Internal Medicine Physician compares to other specialties among Hawaii providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Internal Medicine Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Janina Paula Sy-Go, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 1356 LUSITANA ST FL 7, Honolulu, HI, 96813, with a listed phone of (808) 462-7662. NPI 1043661549 was issued on 06/27/2016.
Medicare Part D records for calendar year 2023 show 396 prescription claims written by this provider, covering 94 Medicare beneficiaries and totaling roughly $142K in drug spend, split 24% brand-name and 76% generic by claim count.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1043661549 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 06/27/2016 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Janina Paula Sy-Go, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$796
Largest payer
AstraZeneca Pharmaceuticals LP
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Typical
Janina Paula Sy-Go, M.D. - brand share 24.0%
Internal Medicine Physician average
24% brand-name claims vs 76% generic, on 396 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
396
Total Claims
$142K
Total Drug Cost
94
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 920
- Total Day Supply
- 27,280
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $125K
- Generic Drug Cost
- $17K
Patient Demographics
- Average Patient Age
- 73.7 years
- Avg HCC Risk Score
- 2.70
- Gender Split
- 43% female / 57% male
- Age Distribution
- <65: 12, 65-74: 40, 75-84: 29, 85+: 13
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Janina Paula Sy-Go, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Farxiga
Farxiga
36 claims
- Amlodipine Besylate
Amlodipine Besylate
34 claims
- Chlorthalidone
Chlorthalidone
31 claims
- Losartan Potassium
Losartan Potassium
30 claims
- Lokelma
Lokelma
24 claims
- Olmesartan Medoxomil
Olmesartan Medoxomil
21 claims
- Sevelamer Carbonate
Sevelamer Carbonate
19 claims
- Torsemide
Torsemide
18 claims
| Drug | Claims |
|---|---|
| Farxiga Dapagliflozin Propanediol | 36 |
| Amlodipine Besylate | 34 |
| Chlorthalidone | 31 |
| Losartan Potassium | 30 |
| Lokelma Sodium Zirconium Cyclosilicate | 24 |
| Olmesartan Medoxomil | 21 |
| Sevelamer Carbonate | 19 |
| Torsemide | 18 |
| Allopurinol | 14 |
| Kerendia Finerenone | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Janina Paula Sy-Go, M.D. fits within the Internal Medicine Physician landscape nationally.
172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Janina Paula Sy-Go, M.D.'s 396 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Hawaii
Other clinicians with the same primary specialty enrolled in Hawaii, drawn from the same CMS NPPES roster as Sy-Go.
Dr. Michael Abdo
M.D.
Ewa Beach, HI
Dr. Carlos Abeyta
MD
Hilo, HI
Dr. Harry Acuna
MD
Waipahu, HI
Dr. Dale Adams
MD
Kailua, HI
Dr. Kevin Adams
MD
Honolulu, HI
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Hawaii medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Janina Paula Sy-Go, M.D.'s specialty? ▼
Janina Paula Sy-Go, M.D. specializes in Internal Medicine Physician and practices in Honolulu, Hawaii. Credentials: M.D..
How much does Janina Paula Sy-Go, M.D. prescribe under Medicare Part D? ▼
In 2023, Janina Paula Sy-Go, M.D. wrote 396 Medicare Part D claims totaling $142K in drug costs for 94 beneficiaries.
Where is Janina Paula Sy-Go, M.D. located? ▼
Janina Paula Sy-Go, M.D. is located at 1356 LUSITANA ST FL 7, Honolulu, HI, 96813. Phone: (808) 462-7662.
What is Janina Paula Sy-Go, M.D.'s NPI number? ▼
Janina Paula Sy-Go, M.D.'s National Provider Identifier (NPI) is 1043661549, issued on 06/27/2016.
Does Janina Paula Sy-Go, M.D. prescribe more brand-name or generic drugs? ▼
Janina Paula Sy-Go, M.D.'s prescribing is 24% brand-name and 76% generic drugs by claim count, with $125K in brand drug costs.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Janina Paula Sy-Go, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Janina Paula Sy-Go, M.D.'s most frequently prescribed drugs include Farxiga, Amlodipine Besylate, Chlorthalidone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Janina Paula Sy-Go, M.D. accept Medicare? ▼
Janina Paula Sy-Go, M.D. appears in CMS Medicare data with 396 Part D claims and 94 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Janina Paula Sy-Go, M.D.'s credentials? ▼
Janina Paula Sy-Go, M.D.'s NPI is 1043661549 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.