Dr. Mignon Walker , MD
General Practice • Hermosa Beach, CA
2447 Pacific Coast Hwy Fl 2
Hermosa Beach, CA 902542743
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. Mignon Walker is listed in NPPES under General Practice.
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NPI assigned on October 16, 2008; this date does not establish years in practice.
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Published CMS data list 418 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:
- G0181 — Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow: 168 service units.
- 99349 — Residence visit for established patient with moderate level of medical decision making, per day: 162 service units.
- G0179 — Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a: 70 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 4 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 119 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:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) — 50 prescription fills, including refills.
- Amlodipine Besylate — 16 prescription fills, including refills.
- Carisoprodol — 15 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 6 records in the table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under General Practice in California (2024, 411 clinicians with data). Median for this group: 485. Middle half: 154 to 2,031.
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 1,359 in 2020 to 418 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
2447 Pacific Coast Hwy Fl 2
Hermosa Beach, CA 902542743
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
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
33 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 $44,679 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 $34,265 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
162 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
$4,627 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.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
NPI first issued
2008
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, 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)
Dr. Walker 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. Walker 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 Hermosa Beach and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under General Practice in California (2024, 411 clinicians with data). Median for this group: 485. Middle half: 154 to 2,031.
Too few clinicians listed under General Practice in Hermosa Beach have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
Close to the middle for clinicians listed under General Practice in California (2024, 411 clinicians with data). Median for this group: $45,658. Middle half: $14,895 to $165,622.
Too few clinicians listed under General Practice in Hermosa Beach have Medicare Part B data for 2024 to compare.
Paid by Medicare
Close to the middle for clinicians listed under General Practice in California (2024, 411 clinicians with data). Median for this group: $32,130. Middle half: $11,289 to $132,947.
Too few clinicians listed under General Practice in Hermosa Beach have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Fewer Part D prescriptions than 75% of clinicians listed under General Practice in California (2024, 609 clinicians with data). Median for this group: 755. Middle half: 125 to 3,708.
Too few clinicians listed under General Practice in Hermosa Beach have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 65% of clinicians listed under General Practice in California (2024, 609 clinicians with data). Median for this group: $49,322. Middle half: $2,066 to $279,323.
Too few clinicians listed under General Practice in Hermosa Beach have Medicare Part D data for 2024 to compare.
2 active clinicians are listed under General Practice with a practice address in Hermosa Beach, CA (1,964 in California).
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 decreased 69% from 1,359 in 2020 to 418 in 2024.
- 2020: 1,359
- 2021: 588
- 2022: 404
- 2023: 444
- 2024: 418
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Medicare-allowed amount
Medicare-allowed amount decreased 50% from $88,551 in 2020 to $44,679 in 2024.
- 2020: $88,551
- 2021: $65,829
- 2022: $42,511
- 2023: $50,392
- 2024: $44,679
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Paid by Medicare
Paid by Medicare decreased 49% from $67,472 in 2020 to $34,265 in 2024.
- 2020: $67,472
- 2021: $50,441
- 2022: $31,506
- 2023: $38,748
- 2024: $34,265
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 80% from 595 in 2020 to 119 in 2024.
- 2020: 595
- 2021: 637
- 2022: 480
- 2023: 344
- 2024: 119
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30-day fills
30-day fills decreased 80% from 790 in 2020 to 162 in 2024.
- 2020: 790
- 2021: 856
- 2022: 765
- 2023: 469
- 2024: 162
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Part D drug cost
Part D drug cost decreased 88% from $37,453 in 2020 to $4,627 in 2024.
- 2020: $37,453
- 2021: $58,324
- 2022: $57,000
- 2023: $54,630
- 2024: $4,627
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), 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.
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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G0181
Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow
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168 | 27 | $200.00 | $111.97 |
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99349
Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes
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162 | 27 | $260.00 | $133.07 |
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G0179
Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a
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70 | 22 | $100.00 | $46.48 |
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G0180
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and
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18 | 15 | $125.00 | $58.75 |
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 |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 50 | 1,436 | $1,046.54 | — |
| Amlodipine Besylate | Amlodipine Besylate | 16 | 1,260 | $62.92 | — |
| Carisoprodol | Carisoprodol | 15 | 412 | $174.47 | — |
| Oxycodone Hcl | Oxycodone Hcl | 15 | 450 | $559.31 | — |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 12 | 610 | $2,701.79 | — |
| Metformin Hcl | Metformin Hcl | 11 | 570 | $82.11 | — |
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: 2023-08-30NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - FAMILY PRACTICE
I20101025001365
CA
2668665456
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 2447 PACIFIC COAST HWY FL 2, HERMOSA BEACH, CA 902542743 (Tel: 3109411513)
Registered at 2447 PACIFIC COAST HWY FL 2, HERMOSA BEACH, CA 902542743 (Tel: 3109411513)
Recorded as MIGNON WALKER, MD
NPI status registered as active in NPPES database
Registered at 703 PIER AVE, SUITE B625, HERMOSA BEACH, CA 902543949 (Tel: 3109411513)
Registered at 703 PIER AVE # B625, HERMOSA BEACH, CA 902543949 (Tel: 3109411513)
Recorded as MIGNON MARQUINA, MD
General Practice (license number reported to NPPES: CA A77862)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
2447 Pacific Coast Hwy Fl 2
Hermosa Beach, CA 902542743
Phone: 3109411513