Dr. William Y Oh , MD
Orthopaedic Surgery โข Tamuning, GU
388 Ypao Rd
Tamuning, GU 969133701
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. William Oh is listed in NPPES under Orthopaedic Surgery.
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NPI assigned on May 31, 2005; this date does not establish years in practice.
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Published CMS data list 3,739 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- J0665 โ Injection, bupivicaine, not otherwise specified, 0.5 mg: 1,490 service units.
- J7322 โ Hyaluronan or derivative, hymovis, for intra-articular injection, 1 mg: 889 service units.
- 99213 โ Established patient outpatient office visit: 509 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ 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 10 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 63 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Celecoxib โ 27 prescription fills, including refills.
- Naproxen โ 23 prescription fills, including refills.
- Ibuprofen โ 13 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 696 in 2017 to 3,739 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2017โ2024.
Practice Location & Contact Primary Location
388 Ypao Rd
Tamuning, GU 969133701
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 2 distinct additional practice-address records in Alpena, MI; Bluffton, IN. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Orthopaedic Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
209 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 โ by Provider, 2024.
Medicare-allowed amount
About $103,759 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 โ by Provider and Service, 2024.
Paid by Medicare
About $78,815 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 โ by Provider and Service, 2024.
30-day fills
67 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
$989 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 โ by Provider and Drug, 2024.
Open Payments general payments, program year 2022
All general payments: $714.15 across 13 records.
By nature of payment
- Travel and Lodging: $618.45 across 9 records.
- Food and Beverage: $95.70 across 4 records.
Reporting-company totals
- Zimmer Biomet Holdings, Inc.: $714.15 across 13 records.
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 2022 (published June 30, 2026).
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, โDoes your provider accept Medicare as full payment?โ
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. Oh 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. Oh 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 Tamuning and Guam
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Not enough clinicians listed under Orthopaedic Surgery in Guam have Medicare Part B data for 2024 to make a comparison.
Medicare-allowed amount
Not enough clinicians listed under Orthopaedic Surgery in Guam have Medicare Part B data for 2024 to make a comparison.
Paid by Medicare
Not enough clinicians listed under Orthopaedic Surgery in Guam have Medicare Part B data for 2024 to make a comparison.
Medicare Part D prescriptions
Not enough clinicians listed under Orthopaedic Surgery in Guam have Medicare Part D data for 2024 to make a comparison.
Part D drug cost
Not enough clinicians listed under Orthopaedic Surgery in Guam have Medicare Part D data for 2024 to make a comparison.
4 active clinicians are listed under Orthopaedic Surgery with a practice address in Tamuning, GU (8 in Guam).
Addresses are self-reported to NPPES and may be out of date.
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 437% from 696 in 2017 to 3,739 in 2024.
- 2017: 696
- 2018: 91
- 2023: 1,167
- 2024: 3,739
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Medicare-allowed amount
Medicare-allowed amount increased 116% from $48,135 in 2017 to $103,759 in 2024.
- 2017: $48,135
- 2018: $7,294
- 2023: $49,964
- 2024: $103,759
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Paid by Medicare
Paid by Medicare increased 146% from $32,072 in 2017 to $78,815 in 2024.
- 2017: $32,072
- 2018: $5,319
- 2023: $39,383
- 2024: $78,815
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Medicare Part D prescriptions
Medicare Part D prescriptions varied from year to year: 69 in 2015 and 63 in 2024.
- 2015: 69
- 2016: 94
- 2017: 45
- 2023: 12
- 2024: 63
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30-day fills
30-day fills varied from year to year: 69 in 2015 and 67 in 2024.
- 2015: 69
- 2016: 94
- 2017: 45
- 2023: 12
- 2024: 67
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Part D drug cost
Part D drug cost decreased 98% from $39,767 in 2015 to $989 in 2024.
- 2015: $39,767
- 2016: $475
- 2017: $208
- 2023: $470
- 2024: $989
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $348.75 in 2019 to $714.15 in 2022.
- 2019: $348.75
- 2020: $105.34
- 2022: $714.15
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2022), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 2022 (payments made January 1 โ December 31, 2022): 13 records totaling $714.15.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Zimmer Biomet Holdings, Inc. |
Travel and Lodging
In-kind items and services
|
Avenir | General | $257.38 |
| Zimmer Biomet Holdings, Inc. |
Travel and Lodging
In-kind items and services
|
Arcos | General | $239.01 |
| Zimmer Biomet Holdings, Inc. |
Food and Beverage
In-kind items and services
|
Avenir | General | $46.20 |
| Zimmer Biomet Holdings, Inc. |
Travel and Lodging
In-kind items and services
|
Arcos | General | $34.00 |
| Zimmer Biomet Holdings, Inc. |
Food and Beverage
In-kind items and services
|
Avenir | General | $33.00 |
| Zimmer Biomet Holdings, Inc. |
Travel and Lodging
In-kind items and services
|
Avenir | General | $29.03 |
| Zimmer Biomet Holdings, Inc. |
Travel and Lodging
In-kind items and services
|
Arcos | General | $22.00 |
| Zimmer Biomet Holdings, Inc. |
Travel and Lodging
In-kind items and services
|
Avenir | General | $9.67 |
| Zimmer Biomet Holdings, Inc. |
Travel and Lodging
In-kind items and services
|
Avenir | General | $9.30 |
| Zimmer Biomet Holdings, Inc. |
Travel and Lodging
In-kind items and services
|
Avenir | General | $9.03 |
| Zimmer Biomet Holdings, Inc. |
Travel and Lodging
In-kind items and services
|
Avenir | General | $9.03 |
| Zimmer Biomet Holdings, Inc. |
Food and Beverage
In-kind items and services
|
Avenir | General | $8.80 |
| Zimmer Biomet Holdings, Inc. |
Food and Beverage
In-kind items and services
|
Avenir | General | $7.70 |
Source: CMS Open Payments, program year 2022, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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 โ by Provider and Service data, 2017โ2024; 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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J0665
Injection, bupivicaine, not otherwise specified, 0.5 mg
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1,490 | 20 | $2.13 | $0.01 |
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J7322
Hyaluronan or derivative, hymovis, for intra-articular injection, 1 mg
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889 | 18 | $34.52 | $16.87 |
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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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509 | 168 | $134.95 | $90.50 |
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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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405 | 71 | $4.48 | $0.96 |
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20610
Aspiration and/or injection of fluid from large joint
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150 | 68 | $166.50 | $65.54 |
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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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108 | 108 | $304.07 | $165.79 |
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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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70 | 51 | $203.41 | $127.97 |
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73564
X-ray of knee, 4 or more views
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57 | 50 | $86.37 | $40.21 |
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J7321
Hyaluronan or derivative, hyalgan, supartz or visco-3, for intra-articular injection, per dose
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37 | 12 | $199.77 | $70.46 |
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73030
X-ray of shoulder, minimum of 2 views
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24 | 18 | $64.80 | $29.17 |
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 |
|---|---|---|---|---|---|
| Celecoxib | Celecoxib | 27 | 870 | $309.41 | โ |
| Naproxen | Naproxen | 23 | 680 | $485.94 | โ |
| Ibuprofen | Ibuprofen | 13 | 450 | $193.98 | โ |
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: 2023-04-25NUCC Taxonomy Code: 207X00000X
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
NUCC Taxonomy Code: 207X00000X
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
NUCC Taxonomy Code: 207X00000X
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
NUCC Taxonomy Code: 207X00000X
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
NUCC Taxonomy Code: 207X00000X
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
NUCC Taxonomy Code: 207XS0106X
An orthopaedic surgeon trained in the investigation, preservation and restoration by medical, surgical and rehabilitative means of all structures of the upper extremity directly affecting the form and function of the hand and wrist.
NUCC Taxonomy Code: 207XS0106X
An orthopaedic surgeon trained in the investigation, preservation and restoration by medical, surgical and rehabilitative means of all structures of the upper extremity directly affecting the form and function of the hand and wrist.
NUCC Taxonomy Code: 207XX0801X
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic trauma surgeons deal with the evaluation and management of acute orthopaedic injuries, evaluation and treatment of post-traumatic deformities and nonunions, acute and delayed reconstruction of pelvic and acetabular fractures, as well as osteotomy in the adult hip for treatment of hip arthritis.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ORTHOPEDIC SURGERY
I20230308001626
GU
4082791694
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
401 Long Rapids Plz
Alpena, MI 497071394
Phone: 9893569333
303 S Main St
Bluffton, IN 467142503
Phone: 2609193006
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
Nurse Practitioner
Nurse Practitioner - Family
Family Nurse Practitioner
Physical Therapist
Family Medicine
Doctor of Medicine (M.D.)
Neuromusculoskeletal Medicine, Sports Medicine
Doctor of Medicine (M.D.)
Physical Therapist
Registered Physical Therapist
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 388 YPAO RD, TAMUNING, GU 969133701 (Tel: 6716468881)
NPI status registered as active in NPPES database
Registered at 303 S MAIN ST, BLUFFTON, IN 467142503 (Tel: 2609193006)
Registered at 1501 W CHISHOLM ST, ALPENA, MI 497071401 (Tel: 9893569333)
Recorded as WILLIAM OH, M.D.
Orthopaedic Surgery (license number reported to NPPES: KY 17710)
NPI status registered as active in NPPES database
Registered at 303 S MAIN ST, BLUFFTON, IN 467142503 (Tel: 2609193006)
Registered at 1501 W CHISHOLM ST, ALPENA, MI 497071401 (Tel: 9893569333)
Recorded as WILLIAM OH, M.D.
Orthopaedic Surgery (license number reported to NPPES: KY 17710)
NPI status registered as active in NPPES database
Registered at 401 LONG RAPIDS PLZ, ALPENA, MI 497071394 (Tel: 9893569333)
Registered at 1501 W CHISHOLM ST, ALPENA, MI 497071401 (Tel: 9893569333)
Recorded as WILLIAM OH, M.D.
Orthopaedic Surgery (license number reported to NPPES: MI 4301106667)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Orthopaedic Surgery Specialists in Tamuning
Mailing Address
1501 W Chisholm St
Alpena, MI 497071401
Phone: 9893569333