Doctor profile · Federal record
Dr. Mark Weissig, M.D.
Pulmonary Disease Physician (CMS: Pulmonary Disease) · Internal Medicine Physician · Fullerton, CA
- NPI 1649266032
- Accepts Medicare
- 46 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2141 N Harbor Blvd, Suite 25000
Fullerton, CA 928353827
(714) 626-8610
fax (714) 626-8655 - Mailing address
-
279 Imperial Hwy, Suite 730
Fullerton, CA 928351041
Credentials & registration
- NPI registered
- September 2005 — 21 yrs on file
- Profile last updated
- April 25, 2013
- Year of graduation
- 1980 — 46 yrs since
- Specialty taxonomy
- 207RP1001X — NUCC code
- State license (1)
- California #G49175
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1649266032. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,594
Distinct HCPCS
7
Medicare allowed
$169,024
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 641 | 346 | $98 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 492 | 276 | $138 | |
94060 |
Test to measure expiratory airflow and volume changes before and after medication administration | 135 | 123 | $42 | |
94729 |
Test to examine how well the lungs exchange gases | 105 | 97 | $61 | |
94726 |
Test to determine lung volumes using sensors | 101 | 94 | $58 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 83 | 83 | $237 | |
36415 |
Insertion of needle into vein for collection of blood sample | 37 | 29 | $8 |
In context: peer comparison
Among 8 peers in this city , average services per provider: 317. This provider delivers 5.0× the peer median.Open Payments
Industry payments received
All-time total
$346
Transactions
11
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | 4 | $162.02 | |
| GlaxoSmithKline, LLC. | 4 | $96.84 | |
| Boehringer Ingelheim Pharmaceuticals, Inc. | 3 | $86.77 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,110
Patients
1,052
Total drug cost
$1,009,755
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) | Brand | 404 | 103 | $360,212 |
| Prednisone | Generic | 313 | 115 | $1,425 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 307 | 137 | $10,143 |
| Furosemide | Generic | 296 | 88 | $1,830 |
| Montelukast Sodium | Generic | 224 | 67 | $4,692 |
| Breztri Aerosphere (Budesonide/Glycopyr/Formoterol) | Brand | 206 | 62 | $168,221 |
| Amlodipine Besylate | Generic | 203 | 64 | $2,295 |
| Breo Ellipta (Fluticasone/Vilanterol) | Brand | 201 | 55 | $150,592 |
| Losartan Potassium | Generic | 185 | 63 | $2,682 |
| Azithromycin | Generic | 178 | 102 | $1,907 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Weissig's medical specialty?
Dr. Mark Weissig practices Pulmonary Disease Physician in Fullerton, CA.
Where does Dr. Mark Weissig practice?
Dr. Mark Weissig practices at 2141 N Harbor Blvd, Fullerton, CA 928353827. Office phone: 7146268610.
What is Dr. Mark Weissig's NPI?
Dr. Mark Weissig's National Provider Identifier (NPI) is 1649266032, issued by NPPES.
Does Dr. Mark Weissig accept Medicare assignment?
Yes. Dr. Mark Weissig accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Weissig commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Test to measure expiratory airflow and volume changes before and after medication administration (HCPCS 94060). Source: CMS Medicare Physician & Other Practitioners file.