Rosemary Ongaki , NP-C
Nurse Practitioner • Dover, DE
640 S Queen St
Dover, DE 199043565
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Rosemary Ongaki is listed in NPPES under Nurse Practitioner.
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NPI assigned on December 3, 2013; this date does not establish years in practice.
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Published CMS data list 1,976 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99309 — Subsequent nursing facility care with moderate level of medical decision making, per day: 1,660 service units.
- 99310 — Subsequent nursing facility care with high level of medical decision making, per day: 160 service units.
- 99316 — Nursing facility discharge management: 105 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 5 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 791 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Tramadol Hcl — 72 prescription fills, including refills.
- Atorvastatin Calcium — 57 prescription fills, including refills.
- Levothyroxine Sodium — 57 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 34 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in Dover, DE (2024, 31 clinicians with data). Median for this group: 326. Middle half: 188 to 479.
More Medicare Part B services than 85% of clinicians listed under Nurse Practitioner in Delaware (2024, 215 clinicians with data). Median for this group: 374. Middle half: 115 to 826.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 2,065 in 2021 to 1,976 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021–2024.
Practice Location & Contact Primary Location
640 S Queen St
Dover, DE 199043565
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Geriatric Medicine Consultants Pa. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
2012
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
237 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $169,865 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $131,798 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
795 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$29,702 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $135.46 across 2 records.
By nature of payment
- Food and Beverage: $135.46 across 2 records.
Reporting-company totals
- Cipher Pharmaceuticals US LLC: $99.12 across 1 record.
- Teva Pharmaceuticals USA, Inc.: $36.34 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
14 years (graduated 2012)
CMS Doctors and Clinicians data list 2012 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2013
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Rosemary Ongaki has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Rosemary Ongaki as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Dover and Delaware
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in Dover, DE (2024, 31 clinicians with data). Median for this group: 326. Middle half: 188 to 479.
More Medicare Part B services than 85% of clinicians listed under Nurse Practitioner in Delaware (2024, 215 clinicians with data). Median for this group: 374. Middle half: 115 to 826.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Nurse Practitioner in Dover, DE (2024, 31 clinicians with data). Median for this group: $22,931. Middle half: $12,923 to $37,060.
A higher Medicare-allowed amount than 90% of clinicians listed under Nurse Practitioner in Delaware (2024, 215 clinicians with data). Median for this group: $27,984. Middle half: $10,072 to $59,749.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in Dover, DE (2024, 31 clinicians with data). Median for this group: $17,446. Middle half: $9,514 to $28,151.
A higher Medicare payment amount than 90% of clinicians listed under Nurse Practitioner in Delaware (2024, 215 clinicians with data). Median for this group: $20,208. Middle half: $7,748 to $44,101.
Medicare Part D prescriptions
More Part D prescriptions than 75% of clinicians listed under Nurse Practitioner in Dover, DE (2024, 30 clinicians with data). Median for this group: 175. Middle half: 43 to 608.
More Part D prescriptions than 60% of clinicians listed under Nurse Practitioner in Delaware (2024, 234 clinicians with data). Median for this group: 436. Middle half: 115 to 1,455.
Part D drug cost
A higher Part D drug cost than 60% of clinicians listed under Nurse Practitioner in Dover, DE (2024, 30 clinicians with data). Median for this group: $8,071. Middle half: $460 to $79,087.
Close to the middle for clinicians listed under Nurse Practitioner in Delaware (2024, 234 clinicians with data). Median for this group: $41,940. Middle half: $2,414 to $216,454.
62 active clinicians are listed under Nurse Practitioner with a practice address in Dover, DE (552 in Delaware).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Dover
8.1% of these 62 clinicians have the CMS telehealth indicator.
61.3% of these 62 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services stayed about the same: 2,065 in 2021 and 1,976 in 2024.
- 2021: 2,065
- 2022: 1,859
- 2023: 1,841
- 2024: 1,976
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Medicare-allowed amount
Medicare-allowed amount stayed about the same: $172,642 in 2021 and $169,865 in 2024.
- 2021: $172,642
- 2022: $150,641
- 2023: $175,110
- 2024: $169,865
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Paid by Medicare
Paid by Medicare stayed about the same: $131,401 in 2021 and $131,798 in 2024.
- 2021: $131,401
- 2022: $116,657
- 2023: $134,301
- 2024: $131,798
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Medicare Part D prescriptions
Medicare Part D prescriptions varied from year to year: 872 in 2020 and 791 in 2024.
- 2020: 872
- 2021: 3,884
- 2022: 4,123
- 2023: 2,669
- 2024: 791
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30-day fills
30-day fills varied from year to year: 877 in 2020 and 795 in 2024.
- 2020: 877
- 2021: 3,901
- 2022: 4,151
- 2023: 2,685
- 2024: 795
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Part D drug cost
Part D drug cost decreased 57% from $69,148 in 2020 to $29,702 in 2024.
- 2020: $69,148
- 2021: $203,535
- 2022: $184,964
- 2023: $94,244
- 2024: $29,702
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $84.00 in 2022 to $135.46 in 2025.
- 2022: $84.00
- 2023: $125.00
- 2024: $74.59
- 2025: $135.46
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $135.46.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Cipher Pharmaceuticals US LLC |
Food and Beverage
Cash or cash equivalent
|
Natroba | General | $99.12 |
| Teva Pharmaceuticals USA, Inc. |
Food and Beverage
In-kind items and services
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AUSTEDO XR | General | $36.34 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2020–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2021–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
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1,660 | 188 | $111.90 | $82.77 |
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99310
Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes
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160 | 135 | $160.00 | $118.04 |
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99316
Nursing facility discharge management, more than 30 minutes
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105 | 100 | $140.00 | $100.70 |
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99491
Chronic care management services for two or more chronic conditions, first 30 minutes provided personally by health care professional, per calendar month
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31 | 31 | $100.00 | $65.66 |
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99490
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
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20 | 20 | $80.00 | $48.57 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Tramadol Hcl | Tramadol Hcl | 72 | 1,112 | $621.98 | 18 |
| Atorvastatin Calcium | Atorvastatin Calcium | 57 | 1,541 | $753.36 | 36 |
| Levothyroxine Sodium | Levothyroxine Sodium | 57 | 1,532 | $685.49 | 20 |
| Trazodone Hcl | Trazodone Hcl | 54 | 1,312 | $612.76 | 21 |
| Omeprazole | Omeprazole | 32 | 826 | $357.41 | 25 |
| Oxycodone Hcl | Oxycodone Hcl | 32 | 235 | $344.36 | 12 |
| Lorazepam | Lorazepam | 31 | 253 | $236.56 | 12 |
| Furosemide | Furosemide | 30 | 639 | $158.15 | 20 |
| Mirtazapine | Mirtazapine | 29 | 819 | $1,036.24 | 15 |
| Pregabalin | Pregabalin | 28 | 354 | $349.31 | — |
| Escitalopram Oxalate | Escitalopram Oxalate | 25 | 736 | $282.54 | 12 |
| Metoprolol Succinate | Metoprolol Succinate | 24 | 745 | $360.25 | 14 |
| Gabapentin | Gabapentin | 23 | 647 | $187.28 | 13 |
| Diazepam | Diazepam | 22 | 207 | $99.50 | — |
| Potassium Chloride | Potassium Chloride | 20 | 400 | $170.78 | 16 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 18 | 123 | $493.84 | — |
| Eliquis | Apixaban | 18 | 388 | $7,808.52 | 14 |
| Abrysvo | Rsv Vacc, Pref A And Pref B/Pf | 17 | 162 | $5,367.79 | 17 |
| Arexvy | Rsvpref3 Antigen/As01e/Pf | 16 | 132 | $4,785.32 | 16 |
| Clopidogrel | Clopidogrel Bisulfate | 15 | 433 | $286.51 | — |
| Amlodipine Besylate | Amlodipine Besylate | 14 | 409 | $113.18 | 12 |
| Warfarin Sodium | Warfarin Sodium | 13 | 195 | $55.87 | — |
| Montelukast Sodium | Montelukast Sodium | 13 | 390 | $214.76 | — |
| Buspirone Hcl | Buspirone Hcl | 13 | 305 | $249.21 | — |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 13 | 318 | $358.17 | 12 |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20140306000057
DE
7012147366
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Geriatric Medicine Consultants Pa
1601 Milltown Rd, Wilmington, DE 198084047
Phone: 3025436165
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated December 03, 2013.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.
NPI Administrative Meta
Other Nurse Practitioners in Dover
- Margaret Mcgirr-Crowley, CRNP
- Matthew Fuchs, NP
- Holly Browne, CRNP
- Sherron Bowie, NP
- Loretta Higgins, NP
- Holly Dapias, NP
Mailing Address
640 South Queen St
Dover, DE 199043565
Phone: 3027342444