Physician Profile
Unclaimed ProfileAbout HAAS
Elson M Haas, M.D. is a healthcare provider in San Rafael, CA specialising in general practice. Elson trained at University of Michigan Medical School, graduating in 1972. Elson is also listed as specialising in allergy & immunology.
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
Areas of Expertise
Common questions
What does Dr. Haas specialise in?
Dr. Haas is a general practice in San Rafael, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GENERAL PRACTICE”.
NPI registry
Where is Dr. Haas located?
Dr. Haas is listed at 25 MITCHELL BLVD SUITE 8, San Rafael, CA 94903. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Haas's phone number?
The number on file is (415) 472-2343. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Haas's NPI number?
Dr. Haas's National Provider Identifier is 1740318112. 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
Where did Dr. Haas go to medical school?
Dr. Haas attended University of Michigan Medical School, graduating in 1972. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Haas been practising?
Dr. Haas has 54 years experience. Calculated from a graduation year of 1972, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Haas do most often?
According to Medicare billing data, Dr. Haas provides treatments such as test for allergy using allergenic extract injected into skin with delayed reaction analysis, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Haas confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Haas. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (415) 472-2343
- Email not available
Practice Locations
25 MITCHELL BLVD SUITE 8
San Rafael, CA 94903
Procedures Most Often Billed to Medicare
3,806 services · 1,324 patients · 11 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Test for allergy using allergenic extract injected into skin with delayed reaction analysis | Treatment | 95028 |
1,863 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
1,000 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
273 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
212 |
| Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional | Office visit | 99211 |
128 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
104 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
87 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
43 |
| Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | Billing code | G0438 |
38 |
| Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment | Billing code | G0402 |
29 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
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.
Other general practices in San Rafael 3
Same specialty, same city.
More connections — 17 related providers in 3 groups
Trained at University of Michigan Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1972 at University of Michigan Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Test for allergy using allergenic extract injected into skin with delayed reaction analysis 1
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.