2026 NPPES data Physician Assistant NPI 1386143311 PA-C
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ANDREW COOK, PA-C

Physician Assistant in WALTERBORO, 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
275
Medicare Part D claims · 183 beneficiaries · Physician Assistant avg: 790
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ANDREW COOK, PA-C filed 275 Medicare Part D claims in 2023 as a Physician Assistant in WALTERBORO, South Carolina, prescribing 96% generic.

275
Part D claims, 2023
96%
generic prescribing

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.

ANDREW COOK, PA-C's Medicare Part D volume vs every U.S. prescriber

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

275 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 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

What does the federal data show about ANDREW COOK, PA-C?

Quality data not reported

NPI registry status

Active

Issued 02/05/2018

NPI 1386143311

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

275 65% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in South Carolina

How Physician Assistant compares to other specialties among South Carolina providers

South Carolina providers

Physician Assistant share within South Carolina

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within South Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Physician Assistant (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Physician Assistant ABMS/AOA estimate

Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Physician Assistant) — 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).

ANDREW COOK, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 501 ROBERTSON BLVD, WALTERBORO, SC, 29488, with a listed phone of (843) 782-2000. NPI 1386143311 was issued on 02/05/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what COOK 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 275 prescription claims written by this provider, covering 183 Medicare beneficiaries and totaling roughly $2K in drug spend, split 4% brand-name and 96% generic by claim count, with an opioid prescribing rate of 15.3%. 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.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

501 ROBERTSON BLVD
WALTERBORO, SC 29488

Provider Details

NPI 1386143311
Specialty Physician Assistant
Credentials PA-C
Gender Male
NPI Issued 02/05/2018

Brand vs generic prescribing mix · Generic-heavy

ANDREW COOK, PA-C — brand share 4.0%
Specialty average (est.)

4% brand-name claims vs 96% generic, on 275 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

275
Total Claims
$2K
Total Drug Cost
183
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
277
Total Day Supply
2,199
Brand vs Generic
4% brand / 96% generic
Brand Drug Cost
$425
Generic Drug Cost
$1K
Opioid Claims
42 (15.3% rate)
Antibiotic Claims
81

Patient Demographics

Average Patient Age
66.0 years
Avg HCC Risk Score
1.91
Gender Split
61% female / 39% male
Age Distribution
<65: 65, 65-74: 80, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What ANDREW COOK, PA-C 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
Cephalexin
31
Ondansetron Odt
Ondansetron
31
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
27
Ibuprofen
18
Methylprednisolone
14
Prednisone
12
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
12
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
11

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

Physician Assistant Overview

How ANDREW COOK, PA-C fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

ANDREW COOK, PA-C's 275 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in South Carolina

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

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is ANDREW COOK, PA-C's specialty?
ANDREW COOK, PA-C specializes in Physician Assistant and practices in WALTERBORO, South Carolina. Credentials: PA-C.
How much does ANDREW COOK, PA-C prescribe under Medicare Part D?
In 2023, ANDREW COOK, PA-C wrote 275 Medicare Part D claims totaling $2K in drug costs for 183 beneficiaries.
Where is ANDREW COOK, PA-C located?
ANDREW COOK, PA-C is located at 501 ROBERTSON BLVD, WALTERBORO, SC, 29488. Phone: (843) 782-2000.
What is ANDREW COOK, PA-C's NPI number?
ANDREW COOK, PA-C's National Provider Identifier (NPI) is 1386143311, issued on 02/05/2018.
Does ANDREW COOK, PA-C prescribe more brand-name or generic drugs?
ANDREW COOK, PA-C's prescribing is 4% brand-name and 96% generic drugs by claim count, with $425 in brand drug costs.
Does ANDREW COOK, PA-C prescribe opioids?
Yes, ANDREW COOK, PA-C had 42 opioid claims in 2023 with an opioid prescribing rate of 15.3%.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does ANDREW COOK, PA-C prescribe most often?
Based on 2023 Medicare Part D data, ANDREW COOK, PA-C's most frequently prescribed drugs include Cephalexin, Ondansetron Odt, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANDREW COOK, PA-C accept Medicare?
ANDREW COOK, PA-C appears in CMS Medicare data with 275 Part D claims and 183 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANDREW COOK, PA-C's credentials?
ANDREW COOK, PA-C's NPI is 1386143311 with credentials PA-C. 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