Physician Profile
Wen Yee Lee, M.D. practices internal medicine in Chelmsford, MA. Wen Yee is a 1996 graduate of Tufts University School of Medicine. Medicare claims data shows Wen Yee provided 350 services to 315 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and insertion of needle into vein for collection of blood sample.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
228 BILLERICA RD
Chelmsford, MA 01824
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Most searched procedures
Preventive and evaluation
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
Digestive
Exams & Consultations
Heart & Circulation
Heart health
Imaging referral
Immunizations
Lab tests
Lungs & Breathing
Metabolic & Weight
Minor procedures
Office procedures
Office Procedures
Pain management
Preventive & Routine Care
Screenings & Diagnostics
Sexual health
350 services · 315 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
41 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
126 | More often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
65 | Less often than most peers in Internal Medicine |
| Blood test, basic group of blood chemicals (calcium, total) | Lab test | 80048 |
27 | Less often than most peers in Internal Medicine |
| Bacterial colony count, urine | Lab test | 87086 |
19 | Less often than most peers in Internal Medicine |
| Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | Lab test | 87635 |
18 | As often as other peers in Internal Medicine |
| Complete blood cell count (red cells, white blood cell, platelets), automated test | Lab test | 85027 |
17 | Less often than most peers in Internal Medicine |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
14 | Less often than most peers in Internal Medicine |
| Urinalysis, manual test | Lab test | 81002 |
12 | Less often than most peers in Internal Medicine |
| Automated urinalysis test | Lab test | 81003 |
11 | Less often than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Wen Yee Lee is an internist in Chelmsford, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Wen Yee Lee is listed at 228 Billerica Rd, Chelmsford, MA 01824. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (978) 250-6100. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Wen Yee Lee's National Provider Identifier is 1396701777. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Wen Yee Lee attended Tufts University School of Medicine, graduating in 1996. This comes from the CMS National Downloadable File.
CMS public data
Wen Yee Lee has 30 years experience. Calculated from a graduation year of 1996, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Wen Yee Lee performs procedures including insertion of needle into vein for collection of blood sample, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Wen Yee Lee. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.