2026 NPPES data Hematology (Internal Medicine) Physician NPI 1467471086 M.D.
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David Essex, M.D.

Hematology (Internal Medicine) Physician in Philadelphia, Pennsylvania.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,436 in Hematology (Internal 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
33
Medicare Part D claims · Hematology (Internal Medicine) Physician avg: 693
Generic prescribing
61%
generic claims · 39% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
76.7/100
▼ 6 pts below national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

David Essex, M.D. reported a CMS MIPS final score of 76.7/100 - below the 83.1 national average - and filed 33 Medicare Part D claims in 2023.

76.7/100
MIPS score · -6 vs avg
33
Part D claims, 2023
61%
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.

David Essex, M.D.'s MIPS score vs every scored U.S. clinician

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

77 21st percentile higher than 21% 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%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90+: 189,403 scored providers (40%). Above this entry. 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

Where David Essex, M.D. sits

This provider among hematology (internal medicine) physician peers

Across the 570 hematology (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, David Essex, M.D. writes more Part D claims than 4% of them and scores higher on MIPS quality than 32% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.949.974.899.8Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 60David Essex, M.D.-Part D claim volume, percentile in specialty: 4 · MIPS quality, percentile: 32
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one hematology (internal medicine) physician peer from a representative sample of 60; the gold marker is David Essex, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

David Essex, M.D. 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 David Essex, M.D.?

Below national average

NPI registry status

Active

Issued 07/18/2006

NPI 1467471086

Primary specialty

Hematology (Internal Medicine) Physician

Niche

1,436 US NPIs in this specialty

Medicare Part D claims

33 95% vs specialty avg

2023 prescription claims

Specialty avg: 693

MIPS final score

76.7/100 6.4 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in Pennsylvania

How Hematology (Internal Medicine) Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers
Student in an Organized Health Care Education/Training Program - 5.6%Student in an Organized Health Care Education/Training Program5.6%Pharmacist - 5%Pharmacist5%Physical Therapist - 4.9%Physical Therapist4.9%Mental Health Counselor - 3.9%Mental Health Counselor3.9%Internal Medicine Physician - 3.3%Internal Medicine Physician3.3%Professional Counselor - 3.2%Professional Counselor3.2%Hematology (Internal Medicine) Physician - 0%Hematology (Internal Medicine) Physician0%
Largest specialties in Pennsylvania (% of in-state providers)

Medicare quality performance, MIPS

David Essex, M.D.'s 2023 MIPS final score plotted against the Hematology (Internal Medicine) Physician national average

Below national average
MIPS Final Score
76.7/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hematology (Internal Medicine) Physician) - 76.7/100 vs national avg 83.1

0%100%National avg83%76.7%
MIPS final score (Hematology (Internal Medicine) Physician) - 76.7/100 vs national avg 83.1
How MIPS and board certification work

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).

David Essex, M.D. appears in the CMS NPPES registry as a Hematology (Internal Medicine) Physician provider holding M.D. credentials at 3401 N BROAD ST, Philadelphia, PA, 19140, with a listed phone of (157) 076-3562. NPI 1467471086 was issued on 07/18/2006.

Medicare Part D records for calendar year 2023 show 33 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $268K in drug spend, split 39% brand-name and 61% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 76.7/100 for the 2023 performance year (Quality 55.2, Cost 54.9), compared with the national average of 83.1.

Hematology (Internal Medicine) Physician is a narrow specialty nationwide, with 1,436 enrolled providers across 50 states and an average of 693 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

3401 N BROAD ST
Philadelphia, PA 19140

Provider Details

NPI 1467471086
Specialty Hematology (Internal Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 07/18/2006

CMS Quality Score (MIPS)

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

76.7036
Final Score
Avg: 83.1
55.1936
Quality
54.937
Cost
98
Promoting Interoperability

Reporting: Group practice

License & disciplinary context - Pennsylvania PA-BOM 2023 annual report

Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to David Essex, M.D.. To verify David Essex, M.D.'s current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases

PA-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

David Essex, M.D. - brand share 39.0%
Hematology (Internal Medicine) Physician average

39% brand-name claims vs 61% generic, on 33 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.

33
Total Claims
$268K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
33
Total Day Supply
954
Brand vs Generic
39% brand / 61% generic
Brand Drug Cost
$191K
Generic Drug Cost
$77K

Patient Demographics

Average Patient Age
68.8 years
Avg HCC Risk Score
3.67

Hematology (Internal Medicine) Physician Overview

How David Essex, M.D. fits within the Hematology (Internal Medicine) Physician landscape nationally.

1,436
Hematology (Internal Medicine) Physician Providers in US
50
States with Hematology (Internal Medicine) Physician
693
Avg Claims per Provider

David Essex, M.D.'s 33 claims are below the specialty average of 693.

Nearby Hematology (Internal Medicine) Physician Providers in Pennsylvania

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

Compare Hematology (Internal 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 Pennsylvania medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Hematology (Internal 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 David Essex, M.D.'s specialty?
David Essex, M.D. specializes in Hematology (Internal Medicine) Physician and practices in Philadelphia, Pennsylvania. Credentials: M.D..
How much does David Essex, M.D. prescribe under Medicare Part D?
In 2023, David Essex, M.D. wrote 33 Medicare Part D claims totaling $268K in drug costs for N/A beneficiaries.
What is David Essex, M.D.'s Medicare quality score?
David Essex, M.D. has a CMS MIPS Final Score of 76.7/100 (Quality: 55.2, Cost: 54.9). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is David Essex, M.D. located?
David Essex, M.D. is located at 3401 N BROAD ST, Philadelphia, PA, 19140. Phone: (157) 076-3562.
What is David Essex, M.D.'s NPI number?
David Essex, M.D.'s National Provider Identifier (NPI) is 1467471086, issued on 07/18/2006.
Does David Essex, M.D. prescribe more brand-name or generic drugs?
David Essex, M.D.'s prescribing is 39% brand-name and 61% generic drugs by claim count, with $191K in brand drug costs.
How many Hematology (Internal Medicine) Physician providers are there in the US?
There are 1,436 Hematology (Internal Medicine) Physician providers across 50 states in the US. The average Hematology (Internal Medicine) Physician provider writes 693 Medicare Part D claims per year.
Does David Essex, M.D. accept Medicare?
David Essex, M.D. appears in CMS Medicare data with 33 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Essex, M.D.'s credentials?
David Essex, M.D.'s NPI is 1467471086 with credentials M.D.. 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

View source datasets and methodology notes
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

Compiled from official public sources by the PlainDoctor editorial team.