2026 NPPES data Anesthesiology Physician NPI 1790793008 MD
Verify on CMS →

REX FOSTER, MD

Anesthesiology Physician in LAWRENCEVILLE, Georgia. 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
935
Medicare Part D claims · 101 beneficiaries · Anesthesiology Physician avg: 860
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
92.2614/100
▲ 9 pts above national avg 83.1 · [object Object]

What the federal data shows

REX FOSTER, MD reported a CMS MIPS final score of 92.2614/100 — above the 83.1 national average — and filed 935 Medicare Part D claims in 2023.

92.2614/100
MIPS score · +9 vs avg
935
Part D claims, 2023
91%
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.

REX FOSTER, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

92 Top 32% higher than 68% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

REX FOSTER, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — 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 REX FOSTER, MD?

High performer (top quartile)

NPI registry status

Active

Issued 08/03/2006

NPI 1790793008

Primary specialty

Anesthesiology Physician

High-volume

56,398 US NPIs in this specialty

Medicare Part D claims

935 9% vs specialty avg

2023 prescription claims

Specialty avg: 860

MIPS final score

92.2614/100 9.1614% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Georgia

How Anesthesiology Physician compares to other specialties among Georgia providers

Georgia providers

Anesthesiology Physician share within Georgia

1. Anesthesiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Anesthesiology Physician share within Georgia

Medicare quality performance — MIPS

REX FOSTER, MD's 2023 MIPS final score plotted against the Anesthesiology Physician national average

High performer (top quartile)
MIPS Final Score
92.2614/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Anesthesiology Physician) — 92.2614/100 vs national avg 83.1

0%100%National avg83%92.3%
MIPS final score (Anesthesiology Physician) — 92.2614/100 vs national avg 83.1

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).

REX FOSTER, MD appears in the CMS NPPES registry as a Anesthesiology Physician provider holding MD credentials at 1000 MEDICAL CENTER BLVD, LAWRENCEVILLE, GA, 30046, with a listed phone of (678) 514-1991. NPI 1790793008 was issued on 08/03/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FOSTER 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 935 prescription claims written by this provider, covering 101 Medicare beneficiaries and totaling roughly $128K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 19.4%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 92.2614/100 for the 2023 performance year (Quality 73.8353), compared with the national average of 83.1.

Anesthesiology Physician is a high-volume specialty nationwide, with 56,398 enrolled providers across 56 states and an average of 860 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

1000 MEDICAL CENTER BLVD
LAWRENCEVILLE, GA 30046

Provider Details

NPI 1790793008
Specialty Anesthesiology Physician
Credentials MD
Gender Male
NPI Issued 08/03/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

92.2614
Final Score
Avg: 83.1
73.8353
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Brand vs generic prescribing mix · Generic-heavy

REX FOSTER, MD — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 935 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.

935
Total Claims
$128K
Total Drug Cost
101
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,049
Total Day Supply
29,218
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$41K
Generic Drug Cost
$87K
Opioid Claims
181 (19.4% rate)

Patient Demographics

Average Patient Age
64.7 years
Avg HCC Risk Score
2.09
Gender Split
69% female / 31% male
Age Distribution
<65: 36, 65-74: 37, 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 REX FOSTER, MD 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
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
273
Buprenorphine
113
Pregabalin
83
Gabapentin
71
Diclofenac Sodium
45
Duloxetine Hcl
37
Tizanidine Hcl
28
Tramadol Hcl
25
Lidocaine
23
Trazodone Hcl
23

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

Anesthesiology Physician Overview

How REX FOSTER, MD fits within the Anesthesiology Physician landscape nationally.

56,398
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider

REX FOSTER, MD's 935 claims are above the specialty average of 860.

Nearby Anesthesiology Physician Providers in Georgia

Other clinicians with the same primary specialty enrolled in Georgia, drawn from the same CMS NPPES roster as FOSTER.

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

Frequently Asked Questions

What is REX FOSTER, MD's specialty?
REX FOSTER, MD specializes in Anesthesiology Physician and practices in LAWRENCEVILLE, Georgia. Credentials: MD.
How much does REX FOSTER, MD prescribe under Medicare Part D?
In 2023, REX FOSTER, MD wrote 935 Medicare Part D claims totaling $128K in drug costs for 101 beneficiaries.
What is REX FOSTER, MD's Medicare quality score?
REX FOSTER, MD has a CMS MIPS Final Score of 92.2614/100 (Quality: 73.8353). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is REX FOSTER, MD located?
REX FOSTER, MD is located at 1000 MEDICAL CENTER BLVD, LAWRENCEVILLE, GA, 30046. Phone: (678) 514-1991.
What is REX FOSTER, MD's NPI number?
REX FOSTER, MD's National Provider Identifier (NPI) is 1790793008, issued on 08/03/2006.
Does REX FOSTER, MD prescribe more brand-name or generic drugs?
REX FOSTER, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $41K in brand drug costs.
Does REX FOSTER, MD prescribe opioids?
Yes, REX FOSTER, MD had 181 opioid claims in 2023 with an opioid prescribing rate of 19.4%.
How many Anesthesiology Physician providers are there in the US?
There are 56,398 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does REX FOSTER, MD prescribe most often?
Based on 2023 Medicare Part D data, REX FOSTER, MD's most frequently prescribed drugs include Buprenorphine-Naloxone, Buprenorphine, Pregabalin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does REX FOSTER, MD accept Medicare?
REX FOSTER, MD appears in CMS Medicare data with 935 Part D claims and 101 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify REX FOSTER, MD's credentials?
REX FOSTER, MD's NPI is 1790793008 with credentials MD. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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