2026 NPPES data Family Medicine Physician NPI 1407118508 M.D. , M.DIV.
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Russell Blackwelder, M.D. , M.DIV.

Family Medicine 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 147,640 in Family Medicine 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
18K
Medicare Part D claims · 433 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
84%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Russell Blackwelder, M.D. , M.DIV. filed 17,708 Medicare Part D claims in 2023 as a Family Medicine Physician in Charleston, South Carolina, prescribing 84% generic.

18K
Part D claims, 2023
84%
generic prescribing
Likely
board-certified (heuristic)

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.

Russell Blackwelder, M.D. , M.DIV.'s Medicare Part D volume vs every U.S. prescriber

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

17,708 Top 2% higher than 98% 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%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2K+: 213,991 prescribers (16%). This entry sits in this band. 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 certification likely (heuristic, not verified)

Russell Blackwelder, M.D. , M.DIV. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Russell Blackwelder, M.D. , M.DIV.?

Quality data not reported

NPI registry status

Active

Issued 06/13/2012

NPI 1407118508

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

17,708 vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in South Carolina

How Family Medicine 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%Family Medicine Physician - 3.1%Family Medicine Physician3.1%
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 Family Medicine 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).

Russell Blackwelder, M.D. , M.DIV. appears in the CMS NPPES registry as a Family Medicine Physician provider holding M.D. , M.DIV. credentials at 171 ASHLEY AVE, Charleston, SC, 29425, with a listed phone of (843) 792-1414. NPI 1407118508 was issued on 06/13/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Blackwelder 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 17,708 prescription claims written by this provider, covering 433 Medicare beneficiaries and totaling roughly $1.7 million in drug spend, split 15% brand-name and 84% generic by claim count, with an opioid prescribing rate of 0.4%. 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

171 ASHLEY AVE
Charleston, SC 29425

Provider Details

NPI 1407118508
Specialty Family Medicine Physician
Credentials M.D. , M.DIV.
Gender Male
NPI Issued 06/13/2012

Hospital and facility affiliations

Facilities where Russell Blackwelder, M.D. , M.DIV. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

University Medical Associates OF The Medical University OF South Carol
Charleston, SC

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

Russell Blackwelder, M.D. , M.DIV. - brand share 15.0%
Family Medicine Physician average

15% brand-name claims vs 84% generic, on 17,708 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.

17,708
Total Claims
$1.7M
Total Drug Cost
433
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
18,907
Total Day Supply
363,947
Brand vs Generic
15% brand / 84% generic
Brand Drug Cost
$1.2M
Generic Drug Cost
$512K
Opioid Claims
63 (0.4% rate)
Antibiotic Claims
93

Patient Demographics

Average Patient Age
75.8 years
Avg HCC Risk Score
1.66
Gender Split
63% female / 37% male
Age Distribution
<65: 94, 65-74: 56, 75-84: 124, 85+: 159

Top Prescribed Drugs (Medicare Part D)

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

What Russell Blackwelder, M.D. , M.DIV. 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
Levothyroxine Sodium
1,089
Atorvastatin Calcium
859
Quetiapine Fumarate
761
Divalproex Sodium Er
Divalproex Sodium
607
Risperidone
501
Fanapt
Iloperidone
413
Amlodipine Besylate
403
Sertraline Hcl
393
Omeprazole
375
Clonazepam
374

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

Family Medicine Physician Overview

How Russell Blackwelder, M.D. , M.DIV. fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

Russell Blackwelder, M.D. , M.DIV.'s 17,708 claims are above the specialty average of 3,418.

Nearby Family 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 Blackwelder.

Compare Family Medicine 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 Family Medicine 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 Russell Blackwelder, M.D. , M.DIV.'s specialty?
Russell Blackwelder, M.D. , M.DIV. specializes in Family Medicine Physician and practices in Charleston, South Carolina. Credentials: M.D. , M.DIV..
How much does Russell Blackwelder, M.D. , M.DIV. prescribe under Medicare Part D?
In 2023, Russell Blackwelder, M.D. , M.DIV. wrote 17,708 Medicare Part D claims totaling $1.7M in drug costs for 433 beneficiaries.
Where is Russell Blackwelder, M.D. , M.DIV. located?
Russell Blackwelder, M.D. , M.DIV. is located at 171 ASHLEY AVE, Charleston, SC, 29425. Phone: (843) 792-1414.
What is Russell Blackwelder, M.D. , M.DIV.'s NPI number?
Russell Blackwelder, M.D. , M.DIV.'s National Provider Identifier (NPI) is 1407118508, issued on 06/13/2012.
Does Russell Blackwelder, M.D. , M.DIV. prescribe more brand-name or generic drugs?
Russell Blackwelder, M.D. , M.DIV.'s prescribing is 15% brand-name and 84% generic drugs by claim count, with $1.2M in brand drug costs.
Does Russell Blackwelder, M.D. , M.DIV. prescribe opioids?
Yes, Russell Blackwelder, M.D. , M.DIV. had 63 opioid claims in 2023 with an opioid prescribing rate of 0.4%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Russell Blackwelder, M.D. , M.DIV. prescribe most often?
Based on 2023 Medicare Part D data, Russell Blackwelder, M.D. , M.DIV.'s most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Quetiapine Fumarate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Russell Blackwelder, M.D. , M.DIV. accept Medicare?
Russell Blackwelder, M.D. , M.DIV. appears in CMS Medicare data with 17,708 Part D claims and 433 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Russell Blackwelder, M.D. , M.DIV.'s credentials?
Russell Blackwelder, M.D. , M.DIV.'s NPI is 1407118508 with credentials M.D. , M.DIV.. 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.