2026 NPPES data Internal Medicine Physician NPI 1598739633 MD
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Laura Saelinger-Shafer, MD

Internal Medicine Physician in Maywood, Illinois. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 172,858 in 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
4K
Medicare Part D claims · 324 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
86%
generic claims · 13% 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

Laura Saelinger-Shafer, MD filed 3,851 Medicare Part D claims in 2023 as a Internal Medicine Physician in Maywood, Illinois, prescribing 86% generic.

4K
Part D claims, 2023
86%
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.

Laura Saelinger-Shafer, MD's Medicare Part D volume vs every U.S. prescriber

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

3,851 Top 9% higher than 91% 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. 2,000–2,200: 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)

Laura Saelinger-Shafer, MD 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 Laura Saelinger-Shafer, MD?

Quality data not reported

NPI registry status

Active

Issued 02/15/2006

NPI 1598739633

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

3,851 42% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Illinois

How Internal Medicine Physician compares to other specialties among Illinois providers

Illinois providers

Largest specialties in Illinois (% of in-state providers)

Clinical Social Worker — 5.2%Clinical Social Worker5.2%Physical Therapist — 5%Physical Therapist5%Mental Health Counselor — 4.5%Mental Health Counselor4.5%Speech-Language Pathologist — 4.2%Speech-Language Pathologist4.2%Student in an Organized Health Care Education/Training Program — 4.2%Student in an Organized Health Care Education/Training Program4.2%Pharmacist — 4.1%Pharmacist4.1%Internal Medicine Physician — 3.6%Internal Medicine Physician3.6%
Largest specialties in Illinois (% of in-state providers)

Specialty board-certification context

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

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

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

0%100%78%
Est. board-certified rate (Internal 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).

Laura Saelinger-Shafer, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 2160 S 1ST AVE, Maywood, IL, 60153, with a listed phone of (708) 485-1020. NPI 1598739633 was issued on 02/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Saelinger-Shafer 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 3,851 prescription claims written by this provider, covering 324 Medicare beneficiaries and totaling roughly $384K in drug spend, split 13% brand-name and 86% generic by claim count, with an opioid prescribing rate of 2.1%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

2160 S 1ST AVE
Maywood, IL 60153

Provider Details

NPI 1598739633
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 02/15/2006

Hospital and facility affiliations

Facilities where Laura Saelinger-Shafer, MD 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.

Loyola Medical Group LLC
Berwyn, IL

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

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 Laura Saelinger-Shafer, MD. To verify Laura Saelinger-Shafer, MD'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 · Typical

Laura Saelinger-Shafer, MD — brand share 13.0%
Internal Medicine Physician average

13% brand-name claims vs 86% generic, on 3,851 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.

3,851
Total Claims
$384K
Total Drug Cost
324
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,168
Total Day Supply
264,096
Brand vs Generic
13% brand / 86% generic
Brand Drug Cost
$319K
Generic Drug Cost
$64K
Opioid Claims
82 (2.1% rate)
Antibiotic Claims
43

Patient Demographics

Average Patient Age
75.1 years
Avg HCC Risk Score
1.21
Gender Split
83% female / 17% male
Age Distribution
<65: 20, 65-74: 148, 75-84: 102, 85+: 54

Top Prescribed Drugs (Medicare Part D)

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

What Laura Saelinger-Shafer, 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
Levothyroxine Sodium
270
Atorvastatin Calcium
212
Losartan Potassium
189
Amlodipine Besylate
179
Rosuvastatin Calcium
149
Lisinopril
137
Metoprolol Succinate
128
Hydrochlorothiazide
125
Pravastatin Sodium
102
Omeprazole
101

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

Internal Medicine Physician Overview

How Laura Saelinger-Shafer, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

Laura Saelinger-Shafer, MD's 3,851 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Illinois

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

Compare 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 Illinois medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby 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 Laura Saelinger-Shafer, MD's specialty?
Laura Saelinger-Shafer, MD specializes in Internal Medicine Physician and practices in Maywood, Illinois. Credentials: MD.
How much does Laura Saelinger-Shafer, MD prescribe under Medicare Part D?
In 2023, Laura Saelinger-Shafer, MD wrote 3,851 Medicare Part D claims totaling $384K in drug costs for 324 beneficiaries.
Where is Laura Saelinger-Shafer, MD located?
Laura Saelinger-Shafer, MD is located at 2160 S 1ST AVE, Maywood, IL, 60153. Phone: (708) 485-1020.
What is Laura Saelinger-Shafer, MD's NPI number?
Laura Saelinger-Shafer, MD's National Provider Identifier (NPI) is 1598739633, issued on 02/15/2006.
Does Laura Saelinger-Shafer, MD prescribe more brand-name or generic drugs?
Laura Saelinger-Shafer, MD's prescribing is 13% brand-name and 86% generic drugs by claim count, with $319K in brand drug costs.
Does Laura Saelinger-Shafer, MD prescribe opioids?
Yes, Laura Saelinger-Shafer, MD had 82 opioid claims in 2023 with an opioid prescribing rate of 2.1%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Laura Saelinger-Shafer, MD prescribe most often?
Based on 2023 Medicare Part D data, Laura Saelinger-Shafer, MD's most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Laura Saelinger-Shafer, MD accept Medicare?
Laura Saelinger-Shafer, MD appears in CMS Medicare data with 3,851 Part D claims and 324 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Laura Saelinger-Shafer, MD's credentials?
Laura Saelinger-Shafer, MD's NPI is 1598739633 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

Compiled from official public sources by the PlainDoctor editorial team.