2026 NPPES data Spinal Cord Injury Medicine Physician NPI 1194929984 M.D.
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HEATHER WALKER, M.D.

Spinal Cord Injury Medicine Physician in NORTH CHARLESTON, South Carolina. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
1K
Medicare Part D claims · 261 beneficiaries · Spinal Cord Injury Medicine Physician avg: 705
Industry payments
$11.5K
8 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

HEATHER WALKER, M.D. filed 1,276 Medicare Part D claims in 2023 as a Spinal Cord Injury Medicine Physician in NORTH CHARLESTON, South Carolina.

1K
Part D claims, 2023
$11.5K
industry payments (Sunshine Act)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

HEATHER WALKER, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,276 Top 22% higher than 78% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). This entry sits in this band. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

HEATHER WALKER, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about HEATHER WALKER, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/13/2007

NPI 1194929984

Primary specialty

Spinal Cord Injury Medicine Physician

Rare

261 US NPIs in this specialty

Medicare Part D claims

1,276 81% vs specialty avg

2023 prescription claims

Specialty avg: 705

Specialty distribution in South Carolina

How Spinal Cord Injury Medicine Physician compares to other specialties among South Carolina providers

South Carolina providers

Spinal Cord Injury Medicine Physician share within South Carolina

1. Spinal Cord Injury Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Spinal Cord Injury Medicine Physician share within South Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Spinal Cord Injury Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Spinal Cord Injury Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Spinal Cord Injury Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Spinal Cord Injury Medicine Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

HEATHER WALKER, M.D. appears in the CMS NPPES registry as a Spinal Cord Injury Medicine Physician provider holding M.D. credentials at 9181 MEDCOM ST, NORTH CHARLESTON, SC, 29406, with a listed phone of (843) 820-7777. NPI 1194929984 was issued on 06/13/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WALKER most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,276 prescription claims written by this provider, covering 261 Medicare beneficiaries and totaling roughly $73K in drug spend, with an opioid prescribing rate of 7.1%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Spinal Cord Injury Medicine Physician is a narrow specialty nationwide, with 261 enrolled providers across 36 states and an average of 705 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

9181 MEDCOM ST
NORTH CHARLESTON, SC 29406

Provider Details

NPI 1194929984
Specialty Spinal Cord Injury Medicine Physician
Credentials M.D.
Gender Female
NPI Issued 06/13/2007

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for HEATHER WALKER, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$11.5K

Largest payer

Merz Pharmaceuticals, LLC

Most common payment type

Travel and Lodging

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,276
Total Claims
$73K
Total Drug Cost
261
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,337
Total Day Supply
34,909
Generic Drug Cost
$21K
Opioid Claims
90 (7.1% rate)
Antibiotic Claims
42

Patient Demographics

Average Patient Age
72.9 years
Avg HCC Risk Score
2.67
Gender Split
58% female / 42% male
Age Distribution
<65: 42, 65-74: 90, 75-84: 95, 85+: 34

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What HEATHER WALKER, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
63
Atorvastatin Calcium
61
Gabapentin
52
Pantoprazole Sodium
43
Potassium Chloride
41
Baclofen
40
Fluticasone Propionate
34
Carvedilol
33
Eliquis
Apixaban
32
Amlodipine Besylate
31

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Spinal Cord Injury Medicine Physician Overview

How HEATHER WALKER, M.D. fits within the Spinal Cord Injury Medicine Physician landscape nationally.

261
Spinal Cord Injury Medicine Physician Providers in US
36
States with Spinal Cord Injury Medicine Physician
705
Avg Claims per Provider

HEATHER WALKER, M.D.'s 1,276 claims are above the specialty average of 705.

Nearby Spinal Cord Injury Medicine Physician Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as WALKER.

Compare Spinal Cord Injury Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is HEATHER WALKER, M.D.'s specialty?
HEATHER WALKER, M.D. specializes in Spinal Cord Injury Medicine Physician and practices in NORTH CHARLESTON, South Carolina. Credentials: M.D..
How much does HEATHER WALKER, M.D. prescribe under Medicare Part D?
In 2023, HEATHER WALKER, M.D. wrote 1,276 Medicare Part D claims totaling $73K in drug costs for 261 beneficiaries.
Where is HEATHER WALKER, M.D. located?
HEATHER WALKER, M.D. is located at 9181 MEDCOM ST, NORTH CHARLESTON, SC, 29406. Phone: (843) 820-7777.
What is HEATHER WALKER, M.D.'s NPI number?
HEATHER WALKER, M.D.'s National Provider Identifier (NPI) is 1194929984, issued on 06/13/2007.
Does HEATHER WALKER, M.D. prescribe opioids?
Yes, HEATHER WALKER, M.D. had 90 opioid claims in 2023 with an opioid prescribing rate of 7.1%.
How many Spinal Cord Injury Medicine Physician providers are there in the US?
There are 261 Spinal Cord Injury Medicine Physician providers across 36 states in the US. The average Spinal Cord Injury Medicine Physician provider writes 705 Medicare Part D claims per year.
What drugs does HEATHER WALKER, M.D. prescribe most often?
Based on 2023 Medicare Part D data, HEATHER WALKER, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Atorvastatin Calcium, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HEATHER WALKER, M.D. accept Medicare?
HEATHER WALKER, M.D. appears in CMS Medicare data with 1,276 Part D claims and 261 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HEATHER WALKER, M.D.'s credentials?
HEATHER WALKER, M.D.'s NPI is 1194929984 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology