Dr. Ronald S Sinclair , MD
Internal Medicine • Grants Pass, OR
495 Sw Ramsey A Ve
Grants Pass, OR 97527
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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Dr. Ronald Sinclair is listed in NPPES under Internal Medicine.
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NPI assigned on June 24, 2005; this date does not establish years in practice.
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Published CMS data list 1,183 Original Medicare Part B services in 2019.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019. Published rows only; this is not a quality measure.
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Published Part B service records, 2019:
- 99214 — Established patient outpatient office visit: 263 service units.
- 36415 — Insertion of needle into vein for collection of blood sample: 238 service units.
- 85610 — Blood test, clotting time: 114 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2018 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2019). CPT notice
See all 21 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 181 Medicare Part D prescriptions, including refills, in 2020.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020. Published rows only; this is not a quality measure.
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Published Part D records, 2020:
- Atenolol — 24 prescription fills, including refills.
- Potassium Chloride — 22 prescription fills, including refills.
- Omeprazole — 21 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 10 records in the table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 2,505 in 2017 to 1,183 in 2019.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2019.
Practice Location & Contact Primary Location
495 Sw Ramsey A Ve
Grants Pass, OR 97527
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $38,489 in 2019
The total amount Medicare approved for these services in 2019. 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, 2019.
Paid by Medicare
About $22,475 in 2019
The part of the Medicare-allowed amount that Medicare itself paid in 2019, 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, 2019.
30-day fills
482 standardized 30-day fills in 2020
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
$15,309 in 2020
The total cost of these prescriptions in 2020, 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, 2020.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
NPI first issued
2005
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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; 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.
Enrolled in Medicare (PECOS)
Dr. Sinclair 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 Dr. Sinclair 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 Grants Pass and Oregon
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Sinclair are from 2019.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Sinclair are from 2020.
35 active clinicians are listed under Internal Medicine with a practice address in Grants Pass, OR (2,118 in Oregon).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Grants Pass
14.3% of these 35 clinicians have the CMS telehealth indicator.
62.9% of these 35 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 decreased 53% from 2,505 in 2017 to 1,183 in 2019.
- 2017: 2,505
- 2018: 2,417
- 2019: 1,183
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Medicare-allowed amount
Medicare-allowed amount decreased 61% from $99,159 in 2017 to $38,489 in 2019.
- 2017: $99,159
- 2018: $86,662
- 2019: $38,489
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Paid by Medicare
Paid by Medicare decreased 68% from $69,335 in 2017 to $22,475 in 2019.
- 2017: $69,335
- 2018: $60,840
- 2019: $22,475
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 97% from 5,649 in 2016 to 181 in 2020.
- 2016: 5,649
- 2017: 5,272
- 2018: 5,115
- 2019: 3,475
- 2020: 181
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30-day fills
30-day fills decreased 95% from 9,638 in 2016 to 482 in 2020.
- 2016: 9,638
- 2017: 9,645
- 2018: 9,789
- 2019: 7,184
- 2020: 482
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Part D drug cost
Part D drug cost decreased 91% from $166,114 in 2016 to $15,309 in 2020.
- 2016: $166,114
- 2017: $146,364
- 2018: $182,106
- 2019: $152,361
- 2020: $15,309
Sources: CMS Medicare Physician & Other Practitioners (2019), CMS Medicare Part D Prescribers (2020), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2018 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, 2017–2019; 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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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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263 | 159 | $263.50 | $84.13 |
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36415
Insertion of needle into vein for collection of blood sample
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238 | 124 | $16.00 | $2.94 |
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85610
Blood test, clotting time
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114 | 39 | $22.25 | $4.28 |
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80053
Blood test, comprehensive group of blood chemicals
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97 | 86 | $47.75 | $11.51 |
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85027
Complete blood cell count (red cells, white blood cell, platelets), automated test
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69 | 57 | $34.25 | $7.04 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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66 | 50 | $177.50 | $56.10 |
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84443
Blood test, thyroid stimulating hormone (tsh)
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56 | 53 | $49.25 | $18.30 |
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83036
Hemoglobin a1c level
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35 | 29 | $43.00 | $10.57 |
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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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31 | 12 | $255.75 | $101.95 |
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85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
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29 | 27 | $34.25 | $8.46 |
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80048
Blood test, basic group of blood chemicals (calcium, total)
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28 | 19 | $41.00 | $9.21 |
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81001
Manual urinalysis test with examination using microscope, automated
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28 | 16 | $25.25 | $3.45 |
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99211
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
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28 | 18 | $48.75 | $18.32 |
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83540
Iron level
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15 | 13 | $24.75 | $7.05 |
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83550
Iron binding capacity
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15 | 13 | $33.25 | $9.52 |
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84439
Thyroxine (thyroid chemical), free
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14 | 14 | $40.25 | $9.82 |
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83735
Magnesium level
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12 | 11 | $24.50 | $7.29 |
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G0328
Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous
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12 | 12 | $37.00 | $17.69 |
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82607
Cyanocobalamin (vitamin b-12) level
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11 | 11 | $43.00 | $16.41 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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11 | 11 | $498.50 | $198.16 |
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99239
Hospital discharge day management, more than 30 minutes
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11 | 11 | $263.50 | $105.11 |
Source: CMS Part B by Provider and Service, 2019; 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 2020.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Atenolol | Atenolol | 24 | 2,160 | $135.03 | 18 |
| Potassium Chloride | Potassium Chloride | 22 | 1,475 | $1,098.07 | 14 |
| Omeprazole | Omeprazole | 21 | 1,830 | $528.81 | 15 |
| Levothyroxine Sodium | Levothyroxine Sodium | 20 | 1,740 | $529.78 | 18 |
| Amlodipine Besylate | Amlodipine Besylate | 18 | 1,620 | $175.51 | 13 |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 18 | 1,380 | $276.77 | — |
| Eliquis | Apixaban | 16 | 780 | $12,082.30 | — |
| Losartan Potassium | Losartan Potassium | 15 | 1,275 | $194.23 | 12 |
| Metformin Hcl | Metformin Hcl | 14 | 1,200 | $122.96 | 11 |
| Prednisone | Prednisone | 13 | 920 | $165.79 | — |
Source: CMS Part D by Provider and Drug, 2020; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - CARDIOVASCULAR DISEASE (CARDIOLOGY)
I20040524001326
OR
4789675067
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
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.)
Internal Medicine
Doctor of Medicine (M.D.)
Podiatrist - Foot & Ankle Surgery
Doctor of Podiatric Medicine
Podiatrist
Doctor of Podiatric Medicine
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated June 24, 2005.
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 August 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Grants Pass
- Dr. Eric Perry, MD
- Dr. Nathaniel Kelly, MD
- Jasdeep Singh
- Dr. Markus Opel, MD
- Dr. Allen Swanson, DO
- Dr. Prabin Phuyal, MD
Mailing Address
495 Sw Ramsey A Ve
Grants Pass, OR 97527
Phone: 5414766644