Dr. Kenneth A Litwin , MD
Internal Medicine • Sandy Hook, CT
27 Glen Rd, 4th Floor
Sandy Hook, CT 06482
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Dr. Kenneth Litwin is listed in NPPES under Internal Medicine.
-
NPI assigned on April 27, 2006; this date does not establish years in practice.
-
Published CMS data list 1,472 Original Medicare Part B services in 2017.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017. Published rows only; this is not a quality measure.
-
Published Part B service records, 2017:
- 99214 — Established patient outpatient office visit: 269 service units.
- 36415 — Insertion of needle into vein for collection of blood sample: 159 service units.
- 85025 — Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count: 116 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2016 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2017). CPT notice
See all 29 records in the table · Guide: How to read Medicare Part B data
-
Published CMS data list 12 Medicare Part D prescriptions, including refills, in 2022.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2022. Published rows only; this is not a quality measure.
-
Published Part D records, 2022:
- Calcitriol — 12 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2022. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
-
Medicare Part D prescriptions went from 3,124 in 2016 to 12 in 2022.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2016–2022.
Practice Location & Contact Primary Location
27 Glen Rd
4th Floor
Sandy Hook, CT 06482
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $70,576 in 2017
The total amount Medicare approved for these services in 2017. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017.
Paid by Medicare
About $54,130 in 2017
The part of the Medicare-allowed amount that Medicare itself paid in 2017, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017.
30-day fills
12 standardized 30-day fills in 2022
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$531 in 2022
The total cost of these prescriptions in 2022, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2022.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $156.39 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Can order Medicare-covered services
CMS lists Dr. Litwin as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Sandy Hook and Connecticut
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Litwin are from 2017.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Litwin are from 2022.
2 active clinicians are listed under Internal Medicine with a practice address in Sandy Hook, CT (2,625 in Connecticut).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Medicare Part B services
CMS data for Medicare Part B services are available for 2017 only.
-
Medicare-allowed amount
CMS data for Medicare-allowed amount are available for 2017 only.
-
Paid by Medicare
CMS data for Medicare payment amount are available for 2017 only.
-
Medicare Part D prescriptions
Medicare Part D prescriptions decreased 100% from 3,124 in 2016 to 12 in 2022.
- 2016: 3,124
- 2017: 2,839
- 2018: 842
- 2019: 171
- 2022: 12
-
30-day fills
30-day fills decreased 100% from 6,257 in 2016 to 12 in 2022.
- 2016: 6,257
- 2017: 5,732
- 2018: 1,741
- 2019: 397
- 2022: 12
-
Part D drug cost
Part D drug cost decreased 100% from $235,167 in 2016 to $531 in 2022.
- 2016: $235,167
- 2017: $230,072
- 2018: $45,637
- 2019: $6,663
- 2022: $531
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $142.04 in 2019 to $156.39 in 2025.
- 2019: $142.04
- 2020: $31.00
- 2025: $156.39
Sources: CMS Medicare Physician & Other Practitioners (2017), CMS Medicare Part D Prescribers (2022), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $156.39.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ENDURANT IIS | General | $156.39 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
269 | 156 | $170.00 | $114.47 |
|
36415
Insertion of needle into vein for collection of blood sample
|
159 | 109 | $10.00 | $2.94 |
|
85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
|
116 | 94 | $34.00 | $10.45 |
|
93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
|
90 | 88 | $75.00 | $18.50 |
|
81002
Urinalysis, manual test
|
71 | 68 | $15.00 | $3.38 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
70 | 43 | $115.00 | $78.75 |
|
83036
Hemoglobin a1c level
|
67 | 57 | $60.00 | $12.95 |
|
80061
Blood test, lipids (cholesterol and triglycerides)
|
62 | 58 | $52.00 | $13.81 |
|
84443
Blood test, thyroid stimulating hormone (tsh)
|
61 | 55 | $75.00 | $22.59 |
|
80053
Blood test, comprehensive group of blood chemicals
|
50 | 50 | $38.00 | $10.41 |
|
82306
Vitamin d-3 level
|
48 | 45 | $150.00 | $39.80 |
|
82607
Cyanocobalamin (vitamin b-12) level
|
48 | 44 | $90.00 | $20.27 |
|
99497
Advance care planning, first 30 minutes
|
41 | 41 | $100.00 | $86.32 |
|
G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
|
39 | 39 | $160.00 | $124.34 |
|
G0438
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
|
34 | 34 | $190.00 | $182.78 |
|
80048
Blood test, basic group of blood chemicals (calcium, total)
|
29 | 27 | $35.10 | $9.61 |
|
99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
|
26 | 26 | $226.00 | $154.76 |
|
84439
Thyroxine (thyroid chemical), free
|
25 | 19 | $80.00 | $12.12 |
|
82728
Ferritin (blood protein) level
|
23 | 22 | $40.00 | $18.33 |
|
99211
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
|
23 | 18 | $45.00 | $22.02 |
|
83540
Iron level
|
17 | 17 | $20.00 | $8.70 |
|
83550
Iron binding capacity
|
17 | 17 | $20.00 | $11.75 |
|
80051
Blood test panel for electrolytes (sodium potassium, chloride, carbon dioxide)
|
13 | 12 | $20.00 | $6.83 |
|
82565
Blood creatinine level
|
13 | 12 | $5.00 | $1.70 |
|
84520
Urea nitrogen level to assess kidney function, quantitative
|
13 | 12 | $5.00 | $1.71 |
(top 25 shown)
Source: CMS Part B by Provider and Service, 2017; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2022.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Calcitriol | Calcitriol | 12 | 360 | $531.36 | — |
Source: CMS Part D by Provider and Drug, 2022; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2020-07-14NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSSources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 27 GLEN RD, 4TH FLOOR, SANDY HOOK, CT 06482 (Tel: 2033049502)
Registered at 27 GLEN RD, 4TH FLOOR, SANDY HOOK, CT 06482 (Tel: 2033049502)
Registered at 27 GLEN RD, 4TH FLOOR, SANDY HOOK, CT 064821193 (Tel: 2033049502)
Registered at 44 CIRCLE DR E, RIDGEFIELD, CT 068771920 (Tel: 2034382589)
Recorded as KENNETH LITWIN, M.D.
NPI status registered as active in NPPES database
Registered at 132 MAIN ST, DANBURY, CT 068107863 (Tel: 2037941979)
Registered at 132 MAIN ST, DANBURY, CT 068107863 (Tel: (203) 794-1979)
Recorded as KENNETH LITWIN, MD
Internal Medicine (license number reported to NPPES: CT 037343)
NPI status registered as active in NPPES database
Registered at 132 MAIN ST, DANBURY, CT 068107863 (Tel: 2037941979)
Registered at 132 MAIN ST, DANBURY, CT 068107863 (Tel: 2037941979)
Recorded as KENNETH LITWIN, MD
Internal Medicine (license number reported to NPPES: CT 037343)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
More public profiles in Connecticut
Directory navigation, in NPI number order.
- Jean-Michel Oquet, MD Internal Medicine · Norwalk
- Yan Yan Beach, APRN Nurse Practitioner - Family · Avon
- Suresh Pavuluri, MD Emergency Medicine · New Haven
- Cecily Allen Student in an Organized Health Care Education/Training Program · New Haven
- Brittany Mccall, MD Internal Medicine - Hematology & Oncology · Norwich
- Paulina Piekarska, DPM Podiatrist - Foot & Ankle Surgery · Norwalk
- Nicholas Stroumbakis, PA-C Physician Assistant - Surgical · Derby
- Mary Donze, DPT Physical Therapist · Southbury
- Erika Mango, CRNA Nurse Anesthetist, Certified Registered · Hartford
- Richard Carraway Nurse Practitioner - Psychiatric/Mental Health · Fairfield
- Kristin Slyne, PsyD Clinical Neuropsychologist · Hartford
- Jacqueline Atkinson, PA-C Physician Assistant - Medical · Middletown
Mailing Address
27 Glen Rd, 4th Floor
Sandy Hook, CT 06482
Phone: 2033049502