Physician Profile
David S. Oyer, M.D.
Unclaimed ProfileAbout Dr. Oyer
Based in Chicago, IL, David S. Oyer, M.D. is listed in the NPI registry under endocrinology. David graduated from Harvard Medical School in 1969. David is also listed as specializing in endocrinology, diabetes & metabolism. Medicare claims data shows David provided 822 services to 558 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (312) 944-6677
- Email not available
Practice Locations
211 E CHICAGO AVE STE 1700
Chicago, IL 60611
Conditions Commonly Evaluated or Treated
Within Endocrinology, Diabetes and Metabolism generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Adrenal disorders
- Adrenal Fatigue
- Adrenal gland tumor
- Adrenal mass
- Cushing's Syndrome
Blood sugar disorders
- Diabetic neuropathy
- Gestational diabetes
- Low Blood Sugar
- Prediabetes
Bone and calcium disorders
- High calcium
- Low Calcium
- Vitamin D deficiency
Endocrine tumors
- Neuroendocrine Tumors
Hormone disorders
- Early or delayed puberty
- Enlarged Male Breasts
- Excess facial or body hair
- Perimenopause
- Testosterone deficiency
Metabolic disorders
Pituitary disorders
- Extreme Thirst and Urination
- High Prolactin
- Pituitary Tumor
- Short stature and growth concerns
Thyroid disorders
- Goiter
- Graves' Disease
- Hashimoto's Disease
- Thyroid Cancer
- Thyroid eye disease
- Thyroid nodules
Procedures & services
Most searched procedures
Adrenal evaluations
- Adrenal Gland Suppression Test
- Cortisol Testing
Blood sugar management
- Continuous Glucose Monitor Placement
- Diabetes Screening and A1C Test
- Glucose screening test
Bone evaluations
- Bone Density Scan Referral
- Parathyroid Hormone Test
Bone treatments
- Bisphosphonate Infusion for Bones
- Bone Building Injections
Diabetes education
- Diabetes Self-Management Education
Diabetes preventive care
- Diabetic Foot Care
Genetic evaluations
- Genetic Testing for Endocrine Tumors
Hormone treatments
- Estrogen and Progesterone Therapy
- Growth Hormone Injections
- Hormone Replacement Therapy Consultation
Metabolic evaluations
- Cholesterol and Lipid Blood Panel
Pituitary evaluations
- Prolactin Blood Test
- Water Deprivation Test
Thyroid procedures
- Radioactive Iodine Treatment
- Thyroid Antibody Testing
- Thyroid Blood Test
- Thyroid Medication Adjustment
- Thyroid Nodule Biopsy
- Thyroid Nodule Radiofrequency Ablation
Procedures Most Often Billed to Medicare
822 services · 558 patients · 10 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | Treatment | 95251 |
75 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
60 |
| Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with provider supplied equipment | Treatment | 95250 |
23 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
257 |
| Hemoglobin a1c level | Lab test | 83036 |
112 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
87 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
79 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
53 |
| Online digital evaluation and management service for an established patient for up to 7 days, total time 11-20 minutes | Office visit | 99422 |
44 |
| Blood glucose (sugar) test performed by hand-held instrument | Lab test | 82962 |
32 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other endocrinology specialists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other endocrinology specialists in Chicago 8
Same specialty, same city.
Trained at Harvard Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1969 at Harvard Medical School 6
Providers who graduated from the same medical school in the same year.
Also performs Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 8
Providers in IL who bill this service to Medicare most often.
Common questions
What is Dr. Oyer's specialty?
Dr. Oyer is an endocrinology in Chicago, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “ENDOCRINOLOGY”.
NPI registry
Where can I find Dr. Oyer?
Dr. Oyer is listed at 211 E CHICAGO AVE STE 1700, Chicago, IL 60611. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Oyer?
The number on file is (312) 944-6677. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Oyer?
Dr. Oyer's National Provider Identifier is 1134226467. 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
What is Dr. Oyer's medical education?
Dr. Oyer attended Harvard Medical School, graduating in 1969. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Oyer have?
Dr. Oyer has 57 years experience. Calculated from a graduation year of 1969, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Oyer known for?
According to Medicare billing data, Dr. Oyer provides treatments such as continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Oyer's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Oyer. 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.