2026 NPPES data Rheumatology Physician NPI 1134707987 DO
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Megan Donaldson, DO

Rheumatology Physician in Charleston, South Carolina. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,181 in Rheumatology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
411
Medicare Part D claims · 47 beneficiaries · Rheumatology Physician avg: 2K
Industry payments
$136.29
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Megan Donaldson, DO filed 411 Medicare Part D claims in 2023 as a Rheumatology Physician in Charleston, South Carolina.

411
Part D claims, 2023
$136.29
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.

Megan Donaldson, DO's Medicare Part D volume vs every U.S. prescriber

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

411 Top 38% higher than 62% 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%). This entry sits in this band. 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. 2K+: 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)

Megan Donaldson, DO 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 Megan Donaldson, DO?

Quality data not reported

NPI registry status

Active

Issued 04/01/2021

NPI 1134707987

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

411 80% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

Specialty distribution in South Carolina

How Rheumatology Physician compares to other specialties among South Carolina providers

South Carolina providers

Largest specialties in South Carolina (% of in-state providers)

Pharmacist - 6.2%Pharmacist6.2%Mental Health Counselor - 5.1%Mental Health Counselor5.1%Family Nurse Practitioner - 4.6%Family Nurse Practitioner4.6%Physical Therapist - 4.5%Physical Therapist4.5%Behavior Technician - 3.8%Behavior Technician3.8%Speech-Language Pathologist - 3.7%Speech-Language Pathologist3.7%Rheumatology Physician - 0.1%Rheumatology Physician0.1%
Largest specialties in South Carolina (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Rheumatology Physician. Verify directly:

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).

Megan Donaldson, DO appears in the CMS NPPES registry as a Rheumatology Physician provider holding DO credentials at 135 RUTLEDGE AVE FL 5, Charleston, SC, 29425, with a listed phone of (843) 876-0615. NPI 1134707987 was issued on 04/01/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Donaldson 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 411 prescription claims written by this provider, covering 47 Medicare beneficiaries and totaling roughly $124K in drug spend. 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.

Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 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

135 RUTLEDGE AVE FL 5
Charleston, SC 29425

Provider Details

NPI 1134707987
Specialty Rheumatology Physician
Credentials DO
Gender Female
NPI Issued 04/01/2021

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 Megan Donaldson, DO. Source: openpaymentsdata.cms.gov.

Total received

$136

Largest payer

GENZYME CORPORATION

Most common payment type

Food and Beverage

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.

411
Total Claims
$124K
Total Drug Cost
47
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
817
Total Day Supply
23,936
Generic Drug Cost
$5K

Patient Demographics

Average Patient Age
67.2 years
Avg HCC Risk Score
2.73
Gender Split
57% female / 43% male
Age Distribution
<65: 14, 65-74: 25, 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 Megan Donaldson, DO 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
Gabapentin
24
Carvedilol
18
Duloxetine Hcl
15
Omeprazole
15
Atorvastatin Calcium
14
Tamsulosin Hcl
14
Amlodipine Besylate
13
Jardiance
Empagliflozin
13
Losartan Potassium
13
Levemir Flexpen
Insulin Detemir
12

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

Rheumatology Physician Overview

How Megan Donaldson, DO fits within the Rheumatology Physician landscape nationally.

6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider

Megan Donaldson, DO's 411 claims are below the specialty average of 2,054.

Nearby Rheumatology Physician Providers in South Carolina

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

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the South Carolina medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Rheumatology Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Megan Donaldson, DO's specialty?
Megan Donaldson, DO specializes in Rheumatology Physician and practices in Charleston, South Carolina. Credentials: DO.
How much does Megan Donaldson, DO prescribe under Medicare Part D?
In 2023, Megan Donaldson, DO wrote 411 Medicare Part D claims totaling $124K in drug costs for 47 beneficiaries.
Where is Megan Donaldson, DO located?
Megan Donaldson, DO is located at 135 RUTLEDGE AVE FL 5, Charleston, SC, 29425. Phone: (843) 876-0615.
What is Megan Donaldson, DO's NPI number?
Megan Donaldson, DO's National Provider Identifier (NPI) is 1134707987, issued on 04/01/2021.
How many Rheumatology Physician providers are there in the US?
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does Megan Donaldson, DO prescribe most often?
Based on 2023 Medicare Part D data, Megan Donaldson, DO's most frequently prescribed drugs include Gabapentin, Carvedilol, Duloxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Megan Donaldson, DO accept Medicare?
Megan Donaldson, DO appears in CMS Medicare data with 411 Part D claims and 47 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Megan Donaldson, DO's credentials?
Megan Donaldson, DO's NPI is 1134707987 with credentials DO. 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

Compiled from official public sources by the PlainDoctor editorial team.