2026 NPPES data Allergy & Immunology Physician NPI 1639160542 MD
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AMY PARKER, MD

Allergy & Immunology Physician in HENRICO, Virginia. 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
161
Medicare Part D claims · 65 beneficiaries · Allergy & Immunology Physician avg: 764
Generic prescribing
59%
generic claims · 41% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

AMY PARKER, MD filed 161 Medicare Part D claims in 2023 as a Allergy & Immunology Physician in HENRICO, Virginia, prescribing 59% generic.

161
Part D claims, 2023
59%
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.

AMY PARKER, MD's Medicare Part D volume vs every U.S. prescriber

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

161 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 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

Board-eligible specialty (heuristic — not verified)

AMY PARKER, MD 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 AMY PARKER, MD?

Quality data not reported

NPI registry status

Active

Issued 10/31/2005

NPI 1639160542

Primary specialty

Allergy & Immunology Physician

Niche

3,390 US NPIs in this specialty

Medicare Part D claims

161 79% vs specialty avg

2023 prescription claims

Specialty avg: 764

Specialty distribution in Virginia

How Allergy & Immunology Physician compares to other specialties among Virginia providers

Virginia providers

Allergy & Immunology Physician share within Virginia

1. Allergy & Immunology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Allergy & Immunology Physician share within Virginia

Specialty board-certification context

Estimated specialty board-certified rate — Allergy & Immunology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Allergy & Immunology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Allergy & Immunology 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).

AMY PARKER, MD appears in the CMS NPPES registry as a Allergy & Immunology Physician provider holding MD credentials at 7702 E PARHAM RD STE 301, HENRICO, VA, 23294, with a listed phone of (804) 527-1190. NPI 1639160542 was issued on 10/31/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PARKER 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 161 prescription claims written by this provider, covering 65 Medicare beneficiaries and totaling roughly $66K in drug spend, split 41% brand-name and 59% generic by claim count. 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.

Allergy & Immunology Physician is a narrow specialty nationwide, with 3,390 enrolled providers across 52 states and an average of 764 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

7702 E PARHAM RD STE 301
HENRICO, VA 23294

Provider Details

NPI 1639160542
Specialty Allergy & Immunology Physician
Credentials MD
Gender Female
NPI Issued 10/31/2005

Brand vs generic prescribing mix · Above average

AMY PARKER, MD — brand share 41.0%
Specialty average (est.)

41% brand-name claims vs 59% generic, on 161 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.

161
Total Claims
$66K
Total Drug Cost
65
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
259
Total Day Supply
7,244
Brand vs Generic
41% brand / 59% generic
Brand Drug Cost
$59K
Generic Drug Cost
$6K

Patient Demographics

Average Patient Age
74.0 years
Avg HCC Risk Score
0.86
Gender Split
62% female / 38% male

Top Prescribed Drugs (Medicare Part D)

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

What AMY PARKER, 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
Ipratropium Bromide
29
Montelukast Sodium
24
Epinephrine
12
Flovent Diskus
Fluticasone Propionate
11

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

Allergy & Immunology Physician Overview

How AMY PARKER, MD fits within the Allergy & Immunology Physician landscape nationally.

3,390
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider

AMY PARKER, MD's 161 claims are below the specialty average of 764.

Nearby Allergy & Immunology Physician Providers in Virginia

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

Compare Allergy & Immunology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is AMY PARKER, MD's specialty?
AMY PARKER, MD specializes in Allergy & Immunology Physician and practices in HENRICO, Virginia. Credentials: MD.
How much does AMY PARKER, MD prescribe under Medicare Part D?
In 2023, AMY PARKER, MD wrote 161 Medicare Part D claims totaling $66K in drug costs for 65 beneficiaries.
Where is AMY PARKER, MD located?
AMY PARKER, MD is located at 7702 E PARHAM RD STE 301, HENRICO, VA, 23294. Phone: (804) 527-1190.
What is AMY PARKER, MD's NPI number?
AMY PARKER, MD's National Provider Identifier (NPI) is 1639160542, issued on 10/31/2005.
Does AMY PARKER, MD prescribe more brand-name or generic drugs?
AMY PARKER, MD's prescribing is 41% brand-name and 59% generic drugs by claim count, with $59K in brand drug costs.
How many Allergy & Immunology Physician providers are there in the US?
There are 3,390 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 764 Medicare Part D claims per year.
What drugs does AMY PARKER, MD prescribe most often?
Based on 2023 Medicare Part D data, AMY PARKER, MD's most frequently prescribed drugs include Ipratropium Bromide, Montelukast Sodium, Epinephrine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AMY PARKER, MD accept Medicare?
AMY PARKER, MD appears in CMS Medicare data with 161 Part D claims and 65 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AMY PARKER, MD's credentials?
AMY PARKER, MD's NPI is 1639160542 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.
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