2026 NPPES data Obesity Medicine (Family Medicine) Physician NPI 1568783991 M.D.
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ELIZABETH LOWDEN, M.D.

Obesity Medicine (Family Medicine) Physician in CHICAGO, Illinois. 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
108
Medicare Part D claims · 19 beneficiaries · Obesity Medicine (Family Medicine) Physician avg: 1K
Generic prescribing
25%
generic claims · 75% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ELIZABETH LOWDEN, M.D. filed 108 Medicare Part D claims in 2023 as a Obesity Medicine (Family Medicine) Physician in CHICAGO, Illinois, prescribing 25% generic.

108
Part D claims, 2023
25%
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.

ELIZABETH LOWDEN, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

108 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)

ELIZABETH LOWDEN, M.D. 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 ELIZABETH LOWDEN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/21/2010

NPI 1568783991

Primary specialty

Obesity Medicine (Family Medicine) Physician

Rare

149 US NPIs in this specialty

Medicare Part D claims

108 91% vs specialty avg

2023 prescription claims

Specialty avg: 1,239

Specialty distribution in Illinois

How Obesity Medicine (Family Medicine) Physician compares to other specialties among Illinois providers

Illinois providers

Obesity Medicine (Family Medicine) Physician share within Illinois

1. Obesity Medicine (Family Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Obesity Medicine (Family Medicine) Physician share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Obesity Medicine (Family Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Obesity Medicine (Family Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Obesity Medicine (Family Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Obesity Medicine (Family Medicine) 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).

ELIZABETH LOWDEN, M.D. is a Obesity Medicine (Family Medicine) Physician provider practicing in CHICAGO, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1568783991. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

ELIZABETH LOWDEN, M.D. appears in the CMS NPPES registry as a Obesity Medicine (Family Medicine) Physician provider holding M.D. credentials at 125 S WACKER DR STE 300, CHICAGO, IL, 60606, with a listed phone of (617) 505-1520. NPI 1568783991 was issued on 06/21/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LOWDEN 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 108 prescription claims written by this provider, covering 19 Medicare beneficiaries and totaling roughly $87K in drug spend, split 75% brand-name and 25% 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.

Obesity Medicine (Family Medicine) Physician is a narrow specialty nationwide, with 149 enrolled providers across 39 states and an average of 1,239 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

125 S WACKER DR STE 300
CHICAGO, IL 60606

Provider Details

NPI 1568783991
Specialty Obesity Medicine (Family Medicine) Physician
Credentials M.D.
Gender Female
NPI Issued 06/21/2010

License & disciplinary context — Illinois IDFPR 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 ~42K Illinois medical licensees in 2023 — they are NOT specific to ELIZABETH LOWDEN, M.D.. To verify ELIZABETH LOWDEN, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases

IDFPR 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 Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Brand-heavy

ELIZABETH LOWDEN, M.D. — brand share 75.0%
Specialty average (est.)

75% brand-name claims vs 25% generic, on 108 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.

108
Total Claims
$87K
Total Drug Cost
19
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
136
Total Day Supply
3,923
Brand vs Generic
75% brand / 25% generic
Brand Drug Cost
$86K

Patient Demographics

Average Patient Age
67.3 years
Avg HCC Risk Score
1.04

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Ozempic
Semaglutide
58
Vyvanse
Lisdexamfetamine Dimesylate
14
Naltrexone Hcl
11

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

Obesity Medicine (Family Medicine) Physician Overview

How ELIZABETH LOWDEN, M.D. fits within the Obesity Medicine (Family Medicine) Physician landscape nationally.

149
Obesity Medicine (Family Medicine) Physician Providers in US
39
States with Obesity Medicine (Family Medicine) Physician
1,239
Avg Claims per Provider

ELIZABETH LOWDEN, M.D.'s 108 claims are below the specialty average of 1,239.

Nearby Obesity Medicine (Family Medicine) Physician Providers in Illinois

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

Compare Obesity Medicine (Family Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ELIZABETH LOWDEN, M.D.'s specialty?
ELIZABETH LOWDEN, M.D. specializes in Obesity Medicine (Family Medicine) Physician and practices in CHICAGO, Illinois. Credentials: M.D..
How much does ELIZABETH LOWDEN, M.D. prescribe under Medicare Part D?
In 2023, ELIZABETH LOWDEN, M.D. wrote 108 Medicare Part D claims totaling $87K in drug costs for 19 beneficiaries.
Where is ELIZABETH LOWDEN, M.D. located?
ELIZABETH LOWDEN, M.D. is located at 125 S WACKER DR STE 300, CHICAGO, IL, 60606. Phone: (617) 505-1520.
What is ELIZABETH LOWDEN, M.D.'s NPI number?
ELIZABETH LOWDEN, M.D.'s National Provider Identifier (NPI) is 1568783991, issued on 06/21/2010.
Does ELIZABETH LOWDEN, M.D. prescribe more brand-name or generic drugs?
ELIZABETH LOWDEN, M.D.'s prescribing is 75% brand-name and 25% generic drugs by claim count, with $86K in brand drug costs.
How many Obesity Medicine (Family Medicine) Physician providers are there in the US?
There are 149 Obesity Medicine (Family Medicine) Physician providers across 39 states in the US. The average Obesity Medicine (Family Medicine) Physician provider writes 1,239 Medicare Part D claims per year.
What drugs does ELIZABETH LOWDEN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ELIZABETH LOWDEN, M.D.'s most frequently prescribed drugs include Ozempic, Vyvanse, Naltrexone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ELIZABETH LOWDEN, M.D. accept Medicare?
ELIZABETH LOWDEN, M.D. appears in CMS Medicare data with 108 Part D claims and 19 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ELIZABETH LOWDEN, M.D.'s credentials?
ELIZABETH LOWDEN, M.D.'s NPI is 1568783991 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

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