Tianna L Welch , PA-C
Physician Assistant • Bend, OR
2500 Ne Neff Rd
Bend, OR 977016015
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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NPI assigned on January 29, 2007; this date does not establish years in practice.
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Published CMS data list 39,155 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:
- J0897 — Injection, denosumab, 1 mg: 22,440 service units.
- J3111 — Injection, romosozumab-aqqg, 1 mg: 11,550 service units.
- J0129 — Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered): 2,825 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.
See all 21 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 1,167 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:
- Methotrexate (Methotrexate Sodium) — 205 prescription fills, including refills.
- Hydroxychloroquine Sulfate — 159 prescription fills, including refills.
- Prednisone — 127 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 29 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 95% of clinicians listed under Physician Assistant in Bend, OR (2024, 143 clinicians with data). Median for this group: 368. Middle half: 138 to 1,481.
More Medicare Part B services than 95% of clinicians listed under Physician Assistant in Oregon (2024, 1,144 clinicians with data). Median for this group: 218. Middle half: 98 to 498.
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 1,078 in 2020 to 39,155 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
2500 Ne Neff Rd
Bend, OR 977016015
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: St Charles Health System Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2004
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
644 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 $949,491 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 $745,220 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
2,154 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
$1,685,523 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: $46.67 across 2 records.
By nature of payment
- Food and Beverage: $46.67 across 2 records.
Reporting-company totals
- Amgen Inc.: $23.96 across 1 record.
- Pharmacosmos Therapeutics Inc.: $22.71 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
22 years (graduated 2004)
CMS Doctors and Clinicians data list 2004 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.
NPI first issued
2007
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; Medicare.gov, “Does your provider accept Medicare as full payment?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Tianna Welch 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 Tianna Welch 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 Bend and Oregon
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 95% of clinicians listed under Physician Assistant in Bend, OR (2024, 143 clinicians with data). Median for this group: 368. Middle half: 138 to 1,481.
More Medicare Part B services than 95% of clinicians listed under Physician Assistant in Oregon (2024, 1,144 clinicians with data). Median for this group: 218. Middle half: 98 to 498.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Physician Assistant in Bend, OR (2024, 143 clinicians with data). Median for this group: $30,677. Middle half: $12,772 to $72,713.
A higher Medicare-allowed amount than 95% of clinicians listed under Physician Assistant in Oregon (2024, 1,144 clinicians with data). Median for this group: $15,959. Middle half: $7,110 to $33,008.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Physician Assistant in Bend, OR (2024, 143 clinicians with data). Median for this group: $22,425. Middle half: $9,329 to $52,415.
A higher Medicare payment amount than 95% of clinicians listed under Physician Assistant in Oregon (2024, 1,144 clinicians with data). Median for this group: $11,156. Middle half: $5,029 to $23,443.
Medicare Part D prescriptions
More Part D prescriptions than 80% of clinicians listed under Physician Assistant in Bend, OR (2024, 137 clinicians with data). Median for this group: 425. Middle half: 90 to 872.
More Part D prescriptions than 75% of clinicians listed under Physician Assistant in Oregon (2024, 1,336 clinicians with data). Median for this group: 340. Middle half: 96 to 1,131.
Part D drug cost
A higher Part D drug cost than 95% of clinicians listed under Physician Assistant in Bend, OR (2024, 137 clinicians with data). Median for this group: $8,977. Middle half: $1,290 to $60,754.
A higher Part D drug cost than 95% of clinicians listed under Physician Assistant in Oregon (2024, 1,336 clinicians with data). Median for this group: $8,538. Middle half: $984 to $101,656.
186 active clinicians are listed under Physician Assistant with a practice address in Bend, OR (2,095 in Oregon).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Bend
29% of these 186 clinicians have the CMS telehealth indicator.
81.7% of these 186 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 increased 3532% from 1,078 in 2020 to 39,155 in 2024.
- 2020: 1,078
- 2021: 1,202
- 2022: 12,639
- 2023: 27,606
- 2024: 39,155
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Medicare-allowed amount
Medicare-allowed amount increased 1260% from $69,794 in 2020 to $949,491 in 2024.
- 2020: $69,794
- 2021: $96,074
- 2022: $349,804
- 2023: $652,759
- 2024: $949,491
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Paid by Medicare
Paid by Medicare increased 1403% from $49,592 in 2020 to $745,220 in 2024.
- 2020: $49,592
- 2021: $70,276
- 2022: $267,977
- 2023: $507,561
- 2024: $745,220
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 31% from 1,699 in 2020 to 1,167 in 2024.
- 2020: 1,699
- 2021: 1,315
- 2022: 948
- 2023: 983
- 2024: 1,167
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30-day fills
30-day fills decreased 32% from 3,158 in 2020 to 2,154 in 2024.
- 2020: 3,158
- 2021: 2,675
- 2022: 1,840
- 2023: 1,846
- 2024: 2,154
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Part D drug cost
Part D drug cost varied from year to year: $1,789,030 in 2020 and $1,685,523 in 2024.
- 2020: $1,789,030
- 2021: $1,558,395
- 2022: $1,236,559
- 2023: $1,310,630
- 2024: $1,685,523
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 96% from $1,164.25 in 2021 to $46.67 in 2025.
- 2021: $1,164.25
- 2023: $360.94
- 2025: $46.67
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, 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 $46.67.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Amgen Inc. |
Food and Beverage
In-kind items and services
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EVENITY | General | $23.96 |
| Pharmacosmos Therapeutics Inc. |
Food and Beverage
In-kind items and services
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MONOFERRIC | General | $22.71 |
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 2016–2023 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, 2017–2024; 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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J0897
Injection, denosumab, 1 mg
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22,440 | 244 | $38.00 | $25.62 |
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J3111
Injection, romosozumab-aqqg, 1 mg
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11,550 | 29 | $15.00 | $10.82 |
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J0129
Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)
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2,825 | 13 | $73.00 | $42.56 |
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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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533 | 395 | $397.58 | $106.31 |
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96372
Injection of drug or substance under skin or into muscle
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473 | 276 | $87.63 | $12.07 |
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G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
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307 | 243 | $64.30 | $13.55 |
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J3489
Injection, zoledronic acid, 1 mg
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200 | 40 | $17.00 | $6.50 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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181 | 139 | $560.41 | $147.78 |
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J7030
Infusion, normal saline solution , 1000 cc
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115 | 56 | $6.00 | $2.47 |
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96365
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
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106 | 66 | $251.28 | $52.67 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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81 | 81 | $608.91 | $138.89 |
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36415
Insertion of needle into vein for collection of blood sample
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62 | 41 | $20.00 | $8.37 |
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96415
Administration of chemotherapy into vein, each additional hour
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60 | 25 | $101.03 | $20.50 |
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G2212
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or
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49 | 28 | $124.78 | $25.35 |
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96413
Administration of chemotherapy into vein, 1 hour or less
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47 | 29 | $489.62 | $99.21 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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31 | 31 | $771.03 | $184.06 |
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73120
X-ray of hand, 2 views
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25 | 24 | $67.00 | $23.35 |
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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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24 | 24 | $276.67 | $75.22 |
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73630
X-ray of foot, minimum of 3 views
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22 | 12 | $78.36 | $26.01 |
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90662
Influenza vaccine split virus, preservative free
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12 | 12 | $189.00 | $81.82 |
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G0008
Administration of influenza virus vaccine
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12 | 12 | $48.00 | $31.25 |
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 |
|---|---|---|---|---|---|
| Methotrexate | Methotrexate Sodium | 205 | 14,286 | $8,466.62 | 53 |
| Hydroxychloroquine Sulfate | Hydroxychloroquine Sulfate | 159 | 12,852 | $8,840.42 | 48 |
| Prednisone | Prednisone | 127 | 3,714 | $933.86 | 45 |
| Leflunomide | Leflunomide | 72 | 3,468 | $7,297.98 | 15 |
| Tramadol Hcl | Tramadol Hcl | 69 | 2,112 | $623.02 | — |
| Enbrel Sureclick | Etanercept | 48 | 1,428 | $373,614.22 | — |
| Allopurinol | Allopurinol | 41 | 2,947 | $778.11 | — |
| Otezla | Apremilast | 40 | 1,200 | $194,236.56 | — |
| Colchicine | Colchicine | 36 | 1,410 | $2,087.84 | 11 |
| Alendronate Sodium | Alendronate Sodium | 34 | 2,744 | $331.67 | 12 |
| Azathioprine | Azathioprine | 30 | 1,762 | $1,824.78 | — |
| Enbrel | Etanercept | 28 | 1,008 | $264,865.25 | — |
| Rinvoq | Upadacitinib | 26 | 780 | $166,590.06 | — |
| Tymlos | Abaloparatide | 24 | 720 | $62,835.70 | — |
| Meloxicam | Meloxicam | 20 | 1,320 | $174.79 | — |
| Humira(Cf) Pen | Adalimumab | 20 | 784 | $269,906.02 | — |
| Teriparatide | Teriparatide | 19 | 532 | $41,534.48 | — |
| Febuxostat | Febuxostat | 18 | 930 | $1,894.10 | — |
| Enbrel Mini | Etanercept | 17 | 476 | $131,223.77 | — |
| Methylprednisolone | Methylprednisolone | 16 | 336 | $66.87 | — |
| Methotrexate Sodium | Methotrexate Sodium/Pf | 15 | 634 | $153.08 | — |
| Diclofenac Sodium | Diclofenac Sodium | 14 | 840 | $218.47 | — |
| Duloxetine Hcl | Duloxetine Hcl | 14 | 1,200 | $429.22 | — |
| Celecoxib | Celecoxib | 14 | 1,080 | $318.75 | — |
| Sulfasalazine | Sulfasalazine | 13 | 617 | $374.05 | — |
(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
Self-certified to NPPES: 2022-01-03NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20070306000108
OR
7911000369
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
St Charles Health System Inc
2600 Ne Neff Rd, Bend, OR 977016337
Phone: 5417064905
St Charles Health System Inc
51781 Huntington Rd, La Pine, OR 977391118
Phone: 5416667920
St Charles Health System Inc
61250 Se Coombs Pl, Bend, OR 977023704
Phone: 5417065935
St Charles Health System Inc
211 Nw Larch Ave, Redmond, OR 977561357
Phone: 5415482164
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Emergency Medicine
Doctor of Medicine (M.D.), Master of Public Health
Hospitalist
Doctor of Osteopathic Medicine (D.O.), Master of Public Health
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Anesthesiology
Doctor of Medicine (M.D.)
Anesthesiology
Doctor of Medicine (M.D.)
Internal Medicine - Critical Care Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 2500 NE NEFF RD, BEND, OR 977016015 (Tel: 5413824321)
Registered at 2500 NE NEFF RD, BEND, OR 977016015 (Tel: 5413824321)
Physician Assistant (license number reported to NPPES: OR PA01031)
Recorded as TIANNA WELCH, PA-C
NPI status registered as active in NPPES database
Registered at 2200 NE NEFF RD, SUITE 302, BEND, OR 977014283 (Tel: 5413171812)
Registered at 2200 NE NEFF RD, SUITE 302, BEND, OR 977014283 (Tel: 5413171812)
Recorded as TIANA WELCH, PA
Internal Medicine (license number reported to NPPES: OR PA01031)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Bend
- J Hilliard, PA-C
- Stephanie Scott, PA-C
- Thomas Dernbach, PA-C
- Douglas Goodgion
- Lori Mcpherson, PA-C
- Stacy Caldwell, PA-C
Mailing Address
2500 Ne Neff Rd
Bend, OR 977016015
Phone: 5413824321