Dr. Scott Alan Hacker , MD
Specialist • La Mesa, CA
5565 Grossmont Center Dr, Bldg 3 Suite 256
La Mesa, CA 919423020
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 November 6, 2006; this date does not establish years in practice.
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Published CMS data list 9,051 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:
- J7329 — Hyaluronan or derivative, trivisc, for intra-articular injection, 1 mg: 4,879 service units.
- J3301 — Injection, triamcinolone acetonide, not otherwise specified, 10 mg: 1,013 service units.
- 20611 — Aspiration and/or injection of fluid large joint using ultrasound guidance: 784 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 25 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 16 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:
- Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) — 16 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 the full table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 85% of clinicians listed under Specialist in California (2024, 971 clinicians with data). Median for this group: 1,449. Middle half: 398 to 4,263.
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 6,171 in 2020 to 9,051 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
5565 Grossmont Center Dr
Bldg 3 Suite 256
La Mesa, CA 919423020
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: G O M G A Medical Partnership. 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
University Of California, Irvine, California College Of Medicine
1997
What Public CMS Data Show
Specialist: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
738 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 $400,481 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 $307,692 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
16 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
$274 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: $4,388.93 across 12 records.
By nature of payment
- Consulting Fee: $3,900.00 across 1 record.
- Food and Beverage: $488.93 across 11 records.
Reporting-company totals (3 largest of 8)
- Smith+Nephew, Inc.: $3,955.09 across 2 records.
- Stryker Corporation: $151.08 across 3 records.
- Zimmer Biomet Holdings, Inc.: $128.38 across 1 record.
Research and ownership records are not included in these totals; they are in the table below.
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
29 years (graduated 1997)
CMS Doctors and Clinicians data list 1997 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
2006
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?”
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. Hacker 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. Hacker 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 La Mesa and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 85% of clinicians listed under Specialist in California (2024, 971 clinicians with data). Median for this group: 1,449. Middle half: 398 to 4,263.
Too few clinicians listed under Specialist in La Mesa have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 80% of clinicians listed under Specialist in California (2024, 971 clinicians with data). Median for this group: $122,660. Middle half: $39,588 to $306,948.
Too few clinicians listed under Specialist in La Mesa have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 80% of clinicians listed under Specialist in California (2024, 971 clinicians with data). Median for this group: $93,548. Middle half: $29,320 to $233,743.
Too few clinicians listed under Specialist in La Mesa have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Fewer Part D prescriptions than 90% of clinicians listed under Specialist in California (2024, 1,051 clinicians with data). Median for this group: 499. Middle half: 100 to 1,747.
Too few clinicians listed under Specialist in La Mesa have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 90% of clinicians listed under Specialist in California (2024, 1,051 clinicians with data). Median for this group: $36,951. Middle half: $2,246 to $302,101.
Too few clinicians listed under Specialist in La Mesa have Medicare Part D data for 2024 to compare.
12 active clinicians are listed under Specialist with a practice address in La Mesa, CA (5,761 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in La Mesa
0% of these 12 clinicians have the CMS telehealth indicator.
25% of these 12 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 47% from 6,171 in 2020 to 9,051 in 2024.
- 2020: 6,171
- 2021: 5,978
- 2022: 6,646
- 2023: 5,838
- 2024: 9,051
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Medicare-allowed amount
Medicare-allowed amount increased 29% from $311,574 in 2020 to $400,481 in 2024.
- 2020: $311,574
- 2021: $384,662
- 2022: $411,806
- 2023: $370,596
- 2024: $400,481
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Paid by Medicare
Paid by Medicare increased 30% from $236,367 in 2020 to $307,692 in 2024.
- 2020: $236,367
- 2021: $294,961
- 2022: $310,495
- 2023: $282,394
- 2024: $307,692
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 11 in 2019 to 16 in 2024.
- 2019: 11
- 2021: 13
- 2022: 23
- 2023: 17
- 2024: 16
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30-day fills
30-day fills went from 11 in 2019 to 16 in 2024.
- 2019: 11
- 2021: 13
- 2022: 23
- 2023: 17
- 2024: 16
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Part D drug cost
Part D drug cost went from $69 in 2019 to $274 in 2024.
- 2019: $69
- 2021: $73
- 2022: $859
- 2023: $132
- 2024: $274
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 88% from $124,658.78 in 2021 to $14,779.93 in 2025.
- 2021: $124,658.78
- 2022: $31,956.25
- 2023: $273,618.27
- 2024: $223,135.38
- 2025: $14,779.93
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): 16 records totaling $14,779.93.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Episurf Medical, Inc. |
General
Cash or cash equivalent
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— | Research | $4,390.00 |
| Smith+Nephew, Inc. |
Consulting Fee
Cash or cash equivalent
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— | General | $3,900.00 |
| Episurf Medical, Inc. |
General
Cash or cash equivalent
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— | Research | $2,530.00 |
| Episurf Medical, Inc. |
General
Cash or cash equivalent
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— | Research | $2,206.00 |
| Episurf Medical, Inc. |
General
Cash or cash equivalent
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— | Research | $1,265.00 |
| Zimmer Biomet Holdings, Inc. |
Food and Beverage
In-kind items and services
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Avenir | General | $128.38 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
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GAMMA | General | $71.30 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
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MAKO | General | $56.26 |
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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Katalyst Bipolar Radial Head System | General | $55.09 |
| Bioventus LLC |
Food and Beverage
In-kind items and services
|
SUPARTZ FX SODIUM HYALURONATE | General | $36.11 |
| Bioventus LLC |
Food and Beverage
In-kind items and services
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XCELL | General | $34.40 |
| DePuy Synthes Sales Inc. |
Food and Beverage
In-kind items and services
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INTRAFIX | General | $23.71 |
| Elevate Surgical Co |
Food and Beverage
In-kind items and services
|
— | General | $23.59 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
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MAKO | General | $23.52 |
| MOXIMED, INC |
Food and Beverage
In-kind items and services
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MISHA KNEE SYSTEM, SMALL, LEFT | General | $18.86 |
| Ethicon Inc. |
Food and Beverage
In-kind items and services
|
STRATAFIX | General | $17.71 |
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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J7329
Hyaluronan or derivative, trivisc, for intra-articular injection, 1 mg
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4,879 | 92 | $66.92 | $7.40 |
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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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1,013 | 181 | $7.00 | $0.97 |
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20611
Aspiration and/or injection of fluid large joint using ultrasound guidance
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784 | 311 | $407.90 | $94.80 |
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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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424 | 304 | $463.07 | $135.39 |
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J7321
Hyaluronan or derivative, hyalgan, supartz or visco-3, for intra-articular injection, per dose
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333 | 97 | $349.80 | $72.89 |
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73564
X-ray of knee, 4 or more views
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301 | 214 | $180.13 | $53.54 |
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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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272 | 214 | $300.76 | $97.14 |
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J0702
Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg
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138 | 52 | $25.99 | $6.93 |
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73562
X-ray of knee, 3 views
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120 | 98 | $156.97 | $45.85 |
|
72170
X-ray of pelvis, 1-2 views
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114 | 102 | $112.53 | $30.62 |
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20610
Aspiration and/or injection of fluid from large joint
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113 | 78 | $279.59 | $62.60 |
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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
|
103 | 103 | $654.37 | $177.02 |
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73030
X-ray of shoulder, minimum of 2 views
|
79 | 66 | $127.05 | $39.50 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
66 | 66 | $393.18 | $118.73 |
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27447
Replacement of knee joint, both sides of knee
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62 | 57 | $5471.29 | $1311.45 |
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20985
Computer-assisted surgery for muscle and bone procedure
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57 | 53 | $582.19 | $140.71 |
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73560
X-ray of knee, 1-2 views
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52 | 38 | $116.46 | $38.04 |
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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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39 | 35 | $687.69 | $191.45 |
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97750
Test or measurement for functional capacity, each 15 minutes
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26 | 13 | $180.00 | $31.43 |
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G0289
Arthroscopy, knee, surgical, for removal of loose body, foreign body, debridement/shaving of articular cartilage (chondroplasty) at the time of other surgical knee arthroscopy in a different compartment of the same knee
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15 | 15 | $150.00 | $84.74 |
|
99441
Telephone medical discussion with physician, 5-10 minutes
|
14 | 14 | $178.29 | $61.12 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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13 | 13 | $153.31 | $58.75 |
|
27130
Replacement of thigh bone and hip joint with prosthesis
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12 | 12 | $5400.50 | $1216.83 |
|
72100
X-ray of lower and sacral spine, 2-3 views
|
11 | 11 | $145.82 | $45.16 |
|
99442
Telephone medical discussion with physician, 11-20 minutes
|
11 | 11 | $267.00 | $96.47 |
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 |
|---|---|---|---|---|---|
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 16 | 97 | $274.34 | 16 |
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: 174400000X
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ORTHOPEDIC SURGERY
I20031113000420
CA
3971416264
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
G O M G A Medical Partnership
5565 Grossmont Ctr Dr, La Mesa, CA 919423098
Phone: 6194623131232
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant - Medical
MSPAC
Physician Assistant
Physician Assistant (Certified)
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Physician Assistant
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated November 06, 2006.
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 Specialists in La Mesa
Healthcare providers in La MesaMailing Address
5565 Grossmont Center Dr, Bldg 3 Suite 256
La Mesa, CA 919423020
Phone: 6194623131